Hair
Hair Follicle
Hair Cells, Auditory
Hair Cells, Auditory, Inner
Hair Cells, Vestibular
Hair Cells, Auditory, Outer
Hair Preparations
Saccule and Utricle
Cochlea
Organ of Corti
Scalp
Stereocilia
Ear, Inner
Hair Cells, Ampulla
Keratins, Hair-Specific
Mechanotransduction, Cellular
Labyrinth Supporting Cells
Plant Roots
Epidermis
Sebaceous Glands
Ectodysplasins
Lateral Line System
Minoxidil
Keratins
Melanins
Keratinocytes
Dermis
Rana catesbeiana
Mechanoreceptors
Keratins, Type II
Spiral Ganglion
Microscopy, Electron, Scanning
Evoked Potentials, Auditory, Brain Stem
Fibroblast Growth Factor 5
Solid-phase microextraction for cannabinoids analysis in hair and its possible application to other drugs. (1/1928)
This paper describes the application of solid-phase microextraction (SPME) to cannabis testing in hair. Fifty milligrams of hair was washed with petroleum ether, hydrolyzed with NaOH, neutralized, deuterated internal standard was added and directly submitted to SPME. The SPME was analyzed by GC-MS. The limit of detection was 0.1 ng/mg for cannabinol (CBN) and delta9-tetrahydrocannabinol (THC) and 0.2 ng/mg for cannabidiol (CBD). THC was detected in a range spanning from 0.1 to 0.7 ng/mg. CBD concentrations ranged from 0.7 to 14.1 ng/mg, and CBN concentrations ranged from 0.4 to 0.7 ng/mg. The effectiveness of different decontamination procedures was also studied on passively contaminated hair. The proposed method is also suitable for the analysis of methadone in hair; cocaine and cocaethylene can be detected in hair with SPME extraction after enzymatic hydrolysis. (+info)Highly sensitive quantitation of methamphetamine by time-resolved fluoroimmunoassay using a new europium chelate as a label. (2/1928)
A simple and highly sensitive time-resolved fluoroimmunoassay of methamphetamine (MA) using a new fluorescent europium chelate (BHHCT-Eu3+) as a label is described. Two variations of competitive immunoassay were attempted. In the first (one-step) assay, microtiter plates coated with anti-MA were used, and the new label was bound to a conjugate of bovine serum albumin and N-(4-aminobutyl)-MA (MA-BSA). In the second (two-step) assay, instead of the labeled MA-BSA, biotinylated MA-BSA and BHHCT-Eu3+-labeled streptavidin-BSA were used. The lowest measurable concentrations of MA for the one-step and the two-step methods were 1 ng/mL (25 pg/assay) and 1 pg/mL (25 fg/assay), respectively. These were 10 to 1000 times superior to the detection limits of MA in any other immunoassay. Intra-assay coefficient of variation was approximately 2-8% at eight different concentrations (n = 4). Analysis of 34 urine samples with the new method and conventional gas chromatography showed a good correlation (r = 0.954). The high detectability of the present assay also enabled segmental hair analysis with a few centimeters of a hair. (+info)Prolactin replacement fails to inhibit reactivation of gonadotropin secretion in rams treated with melatonin under long days. (3/1928)
This study tested the hypothesis that prolactin (PRL) inhibits gonadotropin secretion in rams maintained under long days and that treatment with melatonin (s.c. continuous-release implant; MEL-IMP) reactivates the reproductive axis by suppressing PRL secretion. Adult Soay rams were maintained under long days (16L:8D) and received 1) no further treatment (control, C); 2) MEL-IMP for 16 wk and injections of saline/vehicle for the first 8 wk (M); 3) MEL-IMP for 16 wk and exogenous PRL (s.c. 5 mg ovine PRL 3x daily) for the first 8 wk (M+P). The treatment with melatonin induced a rapid increase in the blood concentrations of FSH and testosterone, rapid growth of the testes, an increase in the frequency of LH pulses, and a decrease in the LH response to N-methyl-D,L-aspartic acid. The concomitant treatment with exogenous PRL had no effect on these reproductive responses but caused a significant delay in the timing of the sexual skin color and growth of the winter pelage. These results do not support the hypothesis and suggest that PRL at physiological long-day concentrations, while being totally ineffective as an inhibitor of gonadotropin secretion, acts in the peripheral tissues and skin to maintain summer characteristics. (+info)WNT signaling in the control of hair growth and structure. (4/1928)
Characterization of the molecular pathways controlling differentiation and proliferation in mammalian hair follicles is central to our understanding of the regulation of normal hair growth, the basis of hereditary hair loss diseases, and the origin of follicle-based tumors. We demonstrate that the proto-oncogene Wnt3, which encodes a secreted paracrine signaling molecule, is expressed in developing and mature hair follicles and that its overexpression in transgenic mouse skin causes a short-hair phenotype due to altered differentiation of hair shaft precursor cells, and cyclical balding resulting from hair shaft structural defects and associated with an abnormal profile of protein expression in the hair shaft. A putative effector molecule for WNT3 signaling, the cytoplasmic protein Dishevelled 2 (DVL2), is normally present at high levels in a subset of cells in the outer root sheath and in precursor cells of the hair shaft cortex and cuticle which lie immediately adjacent to Wnt3-expressing cells. Overexpression of Dvl2 in the outer root sheath mimics the short-hair phenotype produced by overexpression of Wnt3, supporting the hypothesis that Wnt3 and Dvl2 have the potential to act in the same pathway in the regulation of hair growth. These experiments demonstrate a previously unrecognized role for WNT signaling in the control of hair growth and structure, as well as presenting the first example of a mammalian phenotype resulting from overexpression of a Dvl gene and providing an accessible in vivo system for analysis of mammalian WNT signaling pathways. (+info)Modulation of the thermoregulatory sweating response to mild hyperthermia during activation of the muscle metaboreflex in humans. (5/1928)
1. To investigate the effect of the muscle metaboreflex on the thermoregulatory sweating response in humans, eight healthy male subjects performed sustained isometric handgrip exercise in an environmental chamber (35 C and 50 % relative humidity) at 30 or 45 % maximal voluntary contraction (MVC), at the end of which the blood circulation to the forearm was occluded for 120 s. The environmental conditions were such as to produce sweating by increase in skin temperature without a marked change in oesophageal temperature. 2. During circulatory occlusion after handgrip exercise at 30 % MVC for 120 s or at 45 % MVC for 60 s, the sweating rate (SR) on the chest and forearm (hairy regions), and the mean arterial blood pressure were significantly above baseline values (P < 0.05). There were no changes from baseline values in the oesophageal temperature, mean skin temperature, or SR on the palm (hairless regions). 3. During the occlusion after handgrip exercise at 30 % MVC for 60 s and during the occlusion alone, none of the measured parameters differed from baseline values. 4. It is concluded that, under mildly hyperthermic conditions, the thermoregulatory sweating response on the hairy regions is modulated by afferent signals from muscle metaboreceptors. (+info)The effect of bovine somatotropin treatment on production of lactating angora does with kids. (6/1928)
Fourteen Angora does (35+/-2 kg), each with a single kid and in the first month of lactation, were used to determine ongoing (Period 1) and residual (Period 2) effects of chronic bovine somatotropin (bST) treatment. Specifically, we sought to determine whether chronic bST treatment was capable of improving milk yield, and thus kid growth, and mohair production of nursing does. The experiment consisted of a 2-wk pretreatment period, 5 wk of weekly subcutaneous treatment of slow-release bST (n = 7; Period 1), and a 4-wk posttreatment period (Period 2). The weekly dose of bST was calculated to release 100 microg/(kg BW.d(-1)). To estimate milk production, kids were separated from the does daily for 5 h, and their BW was recorded before and after suckling. The difference in BW was taken as milk production for 5 h. Fiber growth was measured by shearing does at the start of the experiment and at the end of Periods 1 and 2. Dry matter intake and BW of does were not affected by bST (P>.05). Average daily gain of kids that were suckling bST-treated does was higher (P<.05) than for kids of untreated does during Period 1 (184 vs. 139 g/d) but not during Period 2 (140 vs. 136 g/d; P>.10). Treatment with bST did not affect (P>.10) milk composition or clean fleece production in either period. Injection of bST did not affect (P>.10) plasma concentrations of glucose (mean = 49.5 mg/dL), urea N (mean = 19 mg/dL), total protein (mean = 72.5 g/d), or NEFA (mean = 122 microEq/L). During the period of bST treatment, plasma concentrations of somatotropin and IGF-I were increased (P<.05), concentrations of thyroxine and cortisol were decreased (P<.10), and plasma insulin levels were unchanged (P>.10) by bST. In conclusion, treatment of Angora dams with bST did not change DMI or mohair growth, but it improved growth of their kids. (+info)The Ice Man's diet as reflected by the stable nitrogen and carbon isotopic composition of his hair. (7/1928)
Establishing the diets of ancient human populations is an integral component of most archaeological studies. Stable isotope analysis of well-preserved bone collagen is the most direct approach for a general assessment of paleodiet. However, this method has been limited by the scarcity of well-preserved skeletal materials for this type of destructive analysis. Hair is preserved in many burials, but is often overlooked as an alternative material for isotopic analysis. Here we report that the stable carbon and nitrogen isotope values for the hair of the 5200 year-old Ice Man indicates a primarily vegetarian diet, in agreement with his dental wear pattern. Whereas previous investigations have focused on bone collagen, the stable isotope composition of hair may prove to be a more reliable proxy for paleodiet reconstruction, particularly when skeletal remains are not well preserved and additional archaeological artifacts are unavailable. (+info)Activity-dependent slowing of conduction differentiates functional subtypes of C fibres innervating human skin. (8/1928)
1. The effects of impulse activity on conduction in cutaneous C fibres have been examined in 46 microneurographic recordings from 11 normal subjects and 11 diabetic patients with normal nerve conduction. A tungsten microelectrode was inserted into a cutaneous nerve, usually the superficial peroneal close to the ankle, and intraneural microstimulation was used to identify an area of skin innervated. Three minute trains of 0.25 ms stimuli at 1, 2 and 4 Hz were then delivered to the surface of the skin, separated by intervals of 6 min with stimulation at 0.25 Hz. Slowing and block of conduction were measured from the nerve responses for up to seven C units per stimulation sequence. 2. Three types of C unit were distinguished by their responses to repetitive stimulation: type 1 units slowed progressively during the 3 min trains; slowing of type 2 units reached a plateau within 1 min; while type 3 units hardly slowed at all. Data from normal and diabetic subjects did not differ and were pooled. After 3 min at 2 Hz, the percentage increases in latency were for type 1, 28.3 +/- 9.7 (n = 63 units, mean +/- s.d.); for type 2, 5.2 +/- 1.6 (n = 14); and for type 3, 0.8 +/- 0.5 (n = 5), with no overlap. After 3 min at 4 Hz, 58 % of type 1 units (but no type 2 or 3 units) blocked intermittently. Recovery of latency after stimulation was faster for type 2 than for type 1 units, but conduction velocities of the three types were similar. 3. Type 1 units were identified as nociceptors and 7 type 2 units were identified as 'cold' fibres, activated by non-noxious cold, with no overlap in modality. None of the units tested was activated by weak mechanical stimuli or reflex sympathetic activation. 4. Spike waveforms were averaged for 18 type 1, 10 type 2 and 6 type 3 units. All units had predominantly triphasic action potentials with a major negative peak, but those of type 3 units were on average both smaller and briefer than those of type 1 and type 2 units. 5. It is concluded that repetitive electrical stimulation reliably differentiates nociceptive from cold-specific C fibres innervating human hairy skin, as has previously been shown for the rat. Cold fibres can propagate impulses continuously at much higher rates than nociceptive fibres. The nature of the type 3 units is unclear. (+info)Medically, hair is defined as a threadlike structure that grows from the follicles found in the skin of mammals. It is primarily made up of a protein called keratin and consists of three parts: the medulla (the innermost part or core), the cortex (middle layer containing keratin filaments) and the cuticle (outer layer of overlapping scales).
Hair growth occurs in cycles, with each cycle consisting of a growth phase (anagen), a transitional phase (catagen), and a resting phase (telogen). The length of hair is determined by the duration of the anagen phase.
While hair plays a crucial role in protecting the skin from external factors like UV radiation, temperature changes, and physical damage, it also serves as an essential aspect of human aesthetics and identity.
A hair follicle is a part of the human skin from which hair grows. It is a complex organ that consists of several layers, including an outer root sheath, inner root sheath, and matrix. The hair follicle is located in the dermis, the second layer of the skin, and is surrounded by sebaceous glands and erector pili muscles.
The hair growth cycle includes three phases: anagen (growth phase), catagen (transitional phase), and telogen (resting phase). During the anagen phase, cells in the matrix divide rapidly to produce new hair fibers that grow out of the follicle. The hair fiber is made up of a protein called keratin, which also makes up the outer layers of the skin and nails.
Hair follicles are important for various biological functions, including thermoregulation, sensory perception, and social communication. They also play a role in wound healing and can serve as a source of stem cells that can differentiate into other cell types.
Auditory hair cells are specialized sensory receptor cells located in the inner ear, more specifically in the organ of Corti within the cochlea. They play a crucial role in hearing by converting sound vibrations into electrical signals that can be interpreted by the brain.
These hair cells have hair-like projections called stereocilia on their apical surface, which are embedded in a gelatinous matrix. When sound waves reach the inner ear, they cause the fluid within the cochlea to move, which in turn causes the stereocilia to bend. This bending motion opens ion channels at the tips of the stereocilia, allowing positively charged ions (such as potassium) to flow into the hair cells and trigger a receptor potential.
The receptor potential then leads to the release of neurotransmitters at the base of the hair cells, which activate afferent nerve fibers that synapse with these cells. The electrical signals generated by this process are transmitted to the brain via the auditory nerve, where they are interpreted as sound.
There are two types of auditory hair cells: inner hair cells and outer hair cells. Inner hair cells are the primary sensory receptors responsible for transmitting information about sound to the brain. They make direct contact with afferent nerve fibers and are more sensitive to mechanical stimulation than outer hair cells.
Outer hair cells, on the other hand, are involved in amplifying and fine-tuning the mechanical response of the inner ear to sound. They have a unique ability to contract and relax in response to electrical signals, which allows them to adjust the stiffness of their stereocilia and enhance the sensitivity of the cochlea to different frequencies.
Damage or loss of auditory hair cells can lead to hearing impairment or deafness, as these cells cannot regenerate spontaneously in mammals. Therefore, understanding the structure and function of hair cells is essential for developing therapies aimed at treating hearing disorders.
I'm sorry for any confusion, but "hair color" is not a term that has a medical definition in the same way that a term like "myocardial infarction" (heart attack) does. Hair color can be described in various ways, such as being a natural hair color (like blonde, brunette, red, or black) or describing a change in hair color due to factors like aging (gray or white hairs) or hair dye usage.
However, it's worth noting that changes in hair color can sometimes be associated with certain medical conditions. For example, premature graying of the hair before the age of 30 can be a feature of certain genetic disorders or vitamin B12 deficiency. Similarly, some skin conditions like alopecia areata or vitiligo can cause patchy changes in hair color. But these associations don't provide a medical definition for 'hair color'.
Hair diseases is a broad term that refers to various medical conditions affecting the hair shaft, follicle, or scalp. These conditions can be categorized into several types, including:
1. Hair shaft abnormalities: These are conditions that affect the structure and growth of the hair shaft. Examples include trichorrhexis nodosa, where the hair becomes weak and breaks easily, and pili torti, where the hair shaft is twisted and appears sparse and fragile.
2. Hair follicle disorders: These are conditions that affect the hair follicles, leading to hair loss or abnormal growth patterns. Examples include alopecia areata, an autoimmune disorder that causes patchy hair loss, and androgenetic alopecia, a genetic condition that leads to pattern baldness in both men and women.
3. Scalp disorders: These are conditions that affect the scalp, leading to symptoms such as itching, redness, scaling, or pain. Examples include seborrheic dermatitis, psoriasis, and tinea capitis (ringworm of the scalp).
4. Hair cycle abnormalities: These are conditions that affect the normal growth cycle of the hair, leading to excessive shedding or thinning. Examples include telogen effluvium, where a large number of hairs enter the resting phase and fall out, and anagen effluvium, which is typically caused by chemotherapy or radiation therapy.
5. Infectious diseases: Hair follicles can become infected with various bacteria, viruses, or fungi, leading to conditions such as folliculitis, furunculosis, and kerion.
6. Genetic disorders: Some genetic disorders can affect the hair, such as Menkes syndrome, which is a rare inherited disorder that affects copper metabolism and leads to kinky, sparse, and brittle hair.
Proper diagnosis and treatment of hair diseases require consultation with a healthcare professional, often a dermatologist or a trichologist who specializes in hair and scalp disorders.
Auditory inner hair cells are specialized sensory receptor cells located in the inner ear, more specifically in the organ of Corti within the cochlea. They play a crucial role in hearing by converting mechanical sound energy into electrical signals that can be processed and interpreted by the brain.
Human ears have about 3,500 inner hair cells arranged in one row along the length of the basilar membrane in each cochlea. These hair cells are characterized by their stereocilia, which are hair-like projections on the apical surface that are embedded in a gelatinous matrix called the tectorial membrane.
When sound waves cause the basilar membrane to vibrate, the stereocilia of inner hair cells bend and deflect. This deflection triggers a cascade of biochemical events leading to the release of neurotransmitters at the base of the hair cell. These neurotransmitters then stimulate the afferent auditory nerve fibers (type I fibers) that synapse with the inner hair cells, transmitting the electrical signals to the brain for further processing and interpretation as sound.
Damage or loss of these inner hair cells can lead to significant hearing impairment or deafness, as they are essential for normal auditory function. Currently, there is no effective way to regenerate damaged inner hair cells in humans, making hearing loss due to their damage permanent.
Hair removal is the deliberate elimination or reduction of body hair. This can be achieved through various methods, both temporary and permanent. Some common temporary methods include shaving, waxing, tweezing, and depilatory creams. Permanent methods may involve laser hair removal or electrolysis, which target the hair follicle to prevent future growth. It's important to note that some methods can have side effects or risks, so it's recommended to consult with a healthcare professional or dermatologist before starting any new hair removal regimen.
Hair dyes are chemical substances that are used to change the color of hair. They contain various types of dyes, including natural dyes derived from plants and minerals, synthetic dyes, and combinations of both. Hair dyes work by penetrating the outer layer of the hair shaft (the cuticle) and bonding with the hair's pigment (melanin) or depositing new color particles within the hair shaft.
There are three main types of hair dyes: temporary, semi-permanent, and permanent. Temporary hair dyes coat the outside of the hair shaft and wash out after a few shampoos. Semi-perermanent hair dyes penetrate slightly into the hair shaft and fade gradually over several washes. Permanent hair dyes contain chemicals that open the cuticle and allow the dye to penetrate deep into the hair shaft, where it reacts with the hair's natural pigment to create a new color that is resistant to fading and washing out.
It is important to note that some hair dyes may contain potentially harmful chemicals, such as coal tar dyes, para-phenylenediamine (PPD), and resorcinol, which have been linked to allergic reactions, skin irritation, and other health problems. It is recommended to perform a patch test before using any new hair dye product and to follow the manufacturer's instructions carefully to minimize the risk of adverse effects.
Vestibular hair cells are specialized sensory receptor cells located in the vestibular system of the inner ear. They play a crucial role in detecting and mediating our sense of balance and spatial orientation by converting mechanical stimuli, such as head movements and gravity, into electrical signals that are sent to the brain.
The hair cells are shaped like a tuft of hair, with stereocilia projecting from their tops. These stereocilia are arranged in rows of graded height, and they are embedded in a gel-like structure within the vestibular organ. When the head moves or changes position, the movement causes deflection of the stereocilia, which opens ion channels at their tips and triggers nerve impulses that are sent to the brain via the vestibular nerve.
There are two types of vestibular hair cells: type I and type II. Type I hair cells have a large, spherical shape and are more sensitive to changes in head position, while type II hair cells are more cylindrical in shape and respond to both linear and angular acceleration. Together, these hair cells help us maintain our balance, coordinate our movements, and keep our eyes focused during head movements.
Auditory outer hair cells are specialized sensory receptor cells located in the cochlea of the inner ear. They are part of the organ of Corti and play a crucial role in hearing by converting sound energy into electrical signals that can be interpreted by the brain.
Unlike the more numerous and simpler auditory inner hair cells, outer hair cells are equipped with unique actin-based molecular motors called "motile" or "piezoelectric" properties. These motors enable the outer hair cells to change their shape and length in response to electrical signals, which in turn amplifies the mechanical vibrations of the basilar membrane where they are located. This amplification increases the sensitivity and frequency selectivity of hearing, allowing us to detect and discriminate sounds over a wide range of intensities and frequencies.
Damage or loss of outer hair cells is a common cause of sensorineural hearing loss, which can result from exposure to loud noises, aging, genetics, ototoxic drugs, and other factors. Currently, there are no effective treatments to regenerate or replace damaged outer hair cells, making hearing loss an irreversible condition in most cases.
Hair preparations refer to cosmetic or grooming products that are specifically formulated to be applied to the hair or scalp for various purposes such as cleansing, conditioning, styling, coloring, or promoting hair growth. These preparations can come in different forms, including shampoos, conditioners, hair masks, serums, gels, mousses, sprays, and dyes. They may contain a wide range of ingredients, such as detergents, moisturizers, proteins, vitamins, minerals, and other nutrients that can help improve the health, appearance, and manageability of the hair. Some hair preparations may also contain medications or natural extracts that have therapeutic properties for treating specific hair or scalp conditions, such as dandruff, dryness, oiliness, thinning, or hair loss.
Alopecia is a medical term that refers to the loss of hair or baldness. It can occur in various parts of the body, but it's most commonly used to describe hair loss from the scalp. Alopecia can have several causes, including genetics, hormonal changes, medical conditions, and aging.
There are different types of alopecia, such as:
* Alopecia Areata: It is a condition that causes round patches of hair loss on the scalp or other parts of the body. The immune system attacks the hair follicles, causing the hair to fall out.
* Androgenetic Alopecia: Also known as male pattern baldness or female pattern baldness, it's a genetic condition that causes gradual hair thinning and eventual hair loss, typically following a specific pattern.
* Telogen Effluvium: It is a temporary hair loss condition caused by stress, medication, pregnancy, or other factors that can cause the hair follicles to enter a resting phase, leading to shedding and thinning of the hair.
The treatment for alopecia depends on the underlying cause. In some cases, such as with telogen effluvium, hair growth may resume without any treatment. However, other forms of alopecia may require medical intervention, including topical treatments, oral medications, or even hair transplant surgery in severe cases.
The saccule and utricle are components of the vestibular system, which is responsible for maintaining balance and spatial orientation within the inner ear. Here are the medical definitions:
1. Saccule: A small sac-like structure located in the vestibular labyrinth of the inner ear. It is one of the two otolith organs (the other being the utricle) that detect linear acceleration and gravity. The saccule contains hair cells with stereocilia, which are embedded in a gelatinous matrix containing calcium carbonate crystals called otoconia. When the head changes position or moves linearly, the movement of these otoconia stimulates the hair cells, sending signals to the brain about the direction and speed of the motion.
2. Utricle: Another sac-like structure in the vestibular labyrinth, similar to the saccule but slightly larger. The utricle is also an otolith organ that detects linear acceleration and head tilts. It contains hair cells with stereocilia embedded in a gelatinous matrix filled with otoconia. When the head tilts or moves linearly, the movement of the otoconia stimulates the hair cells, providing information about the position and motion of the head to the brain.
In summary, both the saccule and utricle are essential for maintaining balance and spatial orientation by detecting linear acceleration and gravity through the movement of otoconia on their hair cell receptors.
The cochlea is a part of the inner ear that is responsible for hearing. It is a spiral-shaped structure that looks like a snail shell and is filled with fluid. The cochlea contains hair cells, which are specialized sensory cells that convert sound vibrations into electrical signals that are sent to the brain.
The cochlea has three main parts: the vestibular canal, the tympanic canal, and the cochlear duct. Sound waves enter the inner ear and cause the fluid in the cochlea to move, which in turn causes the hair cells to bend. This bending motion stimulates the hair cells to generate electrical signals that are sent to the brain via the auditory nerve.
The brain then interprets these signals as sound, allowing us to hear and understand speech, music, and other sounds in our environment. Damage to the hair cells or other structures in the cochlea can lead to hearing loss or deafness.
The Organ of Corti is the sensory organ of hearing within the cochlea of the inner ear. It is a structure in the inner spiral sulcus of the cochlear duct and is responsible for converting sound vibrations into electrical signals that are sent to the brain via the auditory nerve.
The Organ of Corti consists of hair cells, which are sensory receptors with hair-like projections called stereocilia on their apical surfaces. These stereocilia are embedded in a gelatinous matrix and are arranged in rows of different heights. When sound vibrations cause the fluid in the cochlea to move, the stereocilia bend, which opens ion channels and triggers nerve impulses that are sent to the brain.
Damage or loss of hair cells in the Organ of Corti can result in hearing loss, making it a critical structure for maintaining normal auditory function.
The scalp is the anatomical region located at the upper part of the human head, covering the skull except for the face and the ears. It is made up of several layers: the skin, the connective tissue, the galea aponeurotica (a strong, flat, tendinous sheet), loose areolar tissue, and the periosteum (the highly vascularized innermost layer that attaches directly to the skull bones). The scalp has a rich blood supply and is home to numerous sensory receptors, including those for touch, pain, and temperature. It also contains hair follicles, sebaceous glands, and sweat glands.
Stereocilia are hair-like projections found in the inner ear, more specifically in the organ of Corti within the cochlea. They are present on the sensory cells known as hair cells and are involved in hearing by converting sound vibrations into electrical signals that can be transmitted to the brain.
Stereocilia are arranged in rows of graded height, with the tallest ones located near the opening of the cochlea (the base) and the shortest ones closer to the apex. When sound waves reach the inner ear, they cause the fluid within the cochlea to move, which in turn causes stereocilia to bend. This bending action triggers the release of chemical signals that stimulate nerve fibers connected to the hair cells, ultimately transmitting information about the sound to the brain.
Damage or loss of stereocilia can result in hearing impairment or deafness, as seen in various forms of hearing disorders and age-related hearing loss.
The inner ear is the innermost part of the ear that contains the sensory organs for hearing and balance. It consists of a complex system of fluid-filled tubes and sacs called the vestibular system, which is responsible for maintaining balance and spatial orientation, and the cochlea, a spiral-shaped organ that converts sound vibrations into electrical signals that are sent to the brain.
The inner ear is located deep within the temporal bone of the skull and is protected by a bony labyrinth. The vestibular system includes the semicircular canals, which detect rotational movements of the head, and the otolith organs (the saccule and utricle), which detect linear acceleration and gravity.
Damage to the inner ear can result in hearing loss, tinnitus (ringing in the ears), vertigo (a spinning sensation), and balance problems.
Hair cells in the ampulla are specialized sensory receptor cells located within the vestibular system of the inner ear. The vestibular system is responsible for detecting movement and maintaining balance. The ampulla is a part of one of the three semicircular canals, fluid-filled structures that sense rotational movements of the head.
Hair cells in the ampulla have hair-like projections called stereocilia on their surface, which are embedded in a gelatinous structure called the cupula. The movement of fluid within the semicircular canal causes the deflection of the stereocilia, leading to the activation of mechanically gated ion channels and generating receptor potentials. These electrical signals are then transmitted to the brain via the vestibular nerve, allowing the brain to interpret head movements and maintain balance.
Damage or loss of hair cells in the ampulla can lead to vestibular dysfunction and balance disorders.
Hair bleaching agents are chemical substances used to lighten the color of hair by reducing the melanin pigments, primarily eumelanin and pheomelanin. These agents typically contain oxidizing agents like hydrogen peroxide or persulfates, which react with the hair's natural color pigments, causing them to lose their color and become lighter. Some bleaching agents may also include reducing agents, surfactants, and other additives to enhance the bleaching process and provide additional benefits, such as conditioning or smoothing the hair.
It is essential to follow proper safety precautions when using hair bleaching agents, as they can cause damage to the hair shaft and irritation to the skin and eyes if not used correctly. It is recommended to perform a strand test before applying the bleach to the entire head and always follow the manufacturer's instructions for use.
Hair-specific keratins are a type of keratin proteins that are particularly abundant in the structural composition of hair fibers. They are primarily responsible for providing strength, resilience, and elasticity to the hair. Keratins are part of a larger family of fibrous proteins known as intermediate filaments, which also include keratins found in nails, skin, and other epithelial tissues.
Hair-specific keratins are categorized into two types: Type I (acidic keratins) and Type II (basic keratins). These keratin types form heterodimers, which then assemble into intermediate filament structures called protofibrils. Protofibrils further aggregate to create larger intermediate filaments that provide the hair's internal structure.
There are several hair-specific keratin genes, and mutations in these genes can lead to various hair and skin abnormalities, such as hair shaft defects and brittle hair syndromes.
Hypotrichosis is a medical term that refers to a condition characterized by an abnormal lack or sparseness of hair growth. This can apply to the eyebrows, eyelashes, or scalp hair. It's important to note that this is not a complete loss of hair, but rather a significant reduction in hair density. The onset and severity can vary greatly, and it can be inherited or acquired later in life due to various factors such as diseases, burns, or certain medications.
Cellular mechanotransduction is the process by which cells convert mechanical stimuli into biochemical signals, resulting in changes in cell behavior and function. This complex process involves various molecular components, including transmembrane receptors, ion channels, cytoskeletal proteins, and signaling molecules. Mechanical forces such as tension, compression, or fluid flow can activate these components, leading to alterations in gene expression, protein synthesis, and cell shape or movement. Cellular mechanotransduction plays a crucial role in various physiological processes, including tissue development, homeostasis, and repair, as well as in pathological conditions such as fibrosis and cancer progression.
Labyrinth supporting cells are specialized cells that are located in the inner ear and provide structural and functional support to the sensory hair cells within the labyrinth, which is the complex system of tubes and sacs responsible for maintaining balance and hearing. These supporting cells form a crucial part of the architecture of the inner ear and help to maintain the proper functioning of the sensory hair cells by providing mechanical support, contributing to the development and maintenance of the extracellular matrix, and playing a role in the recycling of neurotransmitters. Additionally, labyrinth supporting cells can also transform into new hair cells in certain circumstances, which has implications for potential regenerative therapies aimed at treating hearing loss and balance disorders.
A plant root is not a medical term per se, but it is a term from botany, which is the study of plants. However, I can certainly provide a definition for you.
Plant roots are the underground organs of a plant that typically grow downward into the soil. They serve several important functions, including:
1. Anchorage: Roots help to stabilize the plant and keep it upright in the ground.
2. Absorption: Roots absorb water and nutrients from the soil, which are essential for the plant's growth and development.
3. Conduction: Roots conduct water and nutrients up to the above-ground parts of the plant, such as the stem and leaves.
4. Vegetative reproduction: Some plants can reproduce vegetatively through their roots, producing new plants from root fragments or specialized structures called rhizomes or tubers.
Roots are composed of several different tissues, including the epidermis, cortex, endodermis, and vascular tissue. The epidermis is the outermost layer of the root, which secretes a waxy substance called suberin that helps to prevent water loss. The cortex is the middle layer of the root, which contains cells that store carbohydrates and other nutrients. The endodermis is a thin layer of cells that surrounds the vascular tissue and regulates the movement of water and solutes into and out of the root. The vascular tissue consists of xylem and phloem, which transport water and nutrients throughout the plant.
The epidermis is the outermost layer of the skin, composed mainly of stratified squamous epithelium. It forms a protective barrier that prevents water loss and inhibits the entry of microorganisms. The epidermis contains no blood vessels, and its cells are nourished by diffusion from the underlying dermis. The bottom-most layer of the epidermis, called the stratum basale, is responsible for generating new skin cells that eventually move up to replace dead cells on the surface. This process of cell turnover takes about 28 days in adults.
The most superficial part of the epidermis consists of dead cells called squames, which are constantly shed and replaced. The exact rate at which this happens varies depending on location; for example, it's faster on the palms and soles than elsewhere. Melanocytes, the pigment-producing cells, are also located in the epidermis, specifically within the stratum basale layer.
In summary, the epidermis is a vital part of our integumentary system, providing not only physical protection but also playing a crucial role in immunity and sensory perception through touch receptors called Pacinian corpuscles.
Sebaceous glands are microscopic, exocrine glands that are found in the dermis of mammalian skin. They are attached to hair follicles and produce an oily substance called sebum, which is composed of triglycerides, wax esters, squalene, and metabolites of fat-producing cells (fatty acids, cholesterol). Sebum is released through a duct onto the surface of the skin, where it forms a protective barrier that helps to prevent water loss, keeps the skin and hair moisturized, and has antibacterial properties.
Sebaceous glands are distributed throughout the body, but they are most numerous on the face, scalp, and upper trunk. They can also be found in other areas of the body such as the eyelids (where they are known as meibomian glands), the external ear canal, and the genital area.
Abnormalities in sebaceous gland function can lead to various skin conditions, including acne, seborrheic dermatitis, and certain types of skin cancer.
Ectodysplasins are a group of signaling proteins that play crucial roles in the development and differentiation of ectodermal tissues, including the skin, hair, nails, teeth, and sweat glands. They are involved in various signaling pathways and help regulate cell growth, migration, and pattern formation during embryogenesis. Mutations in genes encoding ectodysplasins can lead to genetic disorders characterized by abnormalities in these tissues, such as ectodermal dysplasia syndromes.
The lateral line system is a sensory organ found in aquatic animals, such as fish and some aquatic amphibians. It is a series of fluid-filled canals and sensory cells that run along the sides of the body, head, and fins. These sensory cells are called neuromasts and contain hair cells that respond to vibrations and water movements. The lateral line system helps these animals detect movement, pressure changes, and vibrations in their aquatic environment, which aids in schooling behavior, prey detection, and avoiding predators.
Minoxidil is a medication that is primarily used to treat hair loss. It is a vasodilator, which means it widens blood vessels and improves blood flow. When applied to the scalp, it helps to stimulate hair growth and slows down hair loss. It is available in topical form as a solution or foam, and is usually applied once or twice a day. Minoxidil is not intended for use in children, and women who are pregnant or breastfeeding should consult with their doctor before using it.
It's important to note that minoxidil does not work for everyone, and it may take several months of regular use before any new hair growth is seen. Additionally, if the medication is discontinued, any hair gained during treatment will likely be lost over time. Common side effects of minoxidil include scalp irritation, unwanted hair growth on other parts of the body, and changes in the color or texture of existing hair. It's important to follow the instructions provided by a healthcare professional when using minoxidil.
Keratins are a type of fibrous structural proteins that constitute the main component of the integumentary system, which includes the hair, nails, and skin of vertebrates. They are also found in other tissues such as horns, hooves, feathers, and reptilian scales. Keratins are insoluble proteins that provide strength, rigidity, and protection to these structures.
Keratins are classified into two types: soft keratins (Type I) and hard keratins (Type II). Soft keratins are found in the skin and simple epithelial tissues, while hard keratins are present in structures like hair, nails, horns, and hooves.
Keratin proteins have a complex structure consisting of several domains, including an alpha-helical domain, beta-pleated sheet domain, and a non-repetitive domain. These domains provide keratin with its unique properties, such as resistance to heat, chemicals, and mechanical stress.
In summary, keratins are fibrous structural proteins that play a crucial role in providing strength, rigidity, and protection to various tissues in the body.
Melanin is a pigment that determines the color of skin, hair, and eyes in humans and animals. It is produced by melanocytes, which are specialized cells found in the epidermis (the outer layer of the skin) and the choroid (the vascular coat of the eye). There are two main types of melanin: eumelanin and pheomelanin. Eumelanin is a black or brown pigment, while pheomelanin is a red or yellow pigment. The amount and type of melanin produced by an individual can affect their skin and hair color, as well as their susceptibility to certain diseases, such as skin cancer.
Keratinocytes are the predominant type of cells found in the epidermis, which is the outermost layer of the skin. These cells are responsible for producing keratin, a tough protein that provides structural support and protection to the skin. Keratinocytes undergo constant turnover, with new cells produced in the basal layer of the epidermis and older cells moving upward and eventually becoming flattened and filled with keratin as they reach the surface of the skin, where they are then shed. They also play a role in the immune response and can release cytokines and other signaling molecules to help protect the body from infection and injury.
The dermis is the layer of skin located beneath the epidermis, which is the outermost layer of the skin. It is composed of connective tissue and provides structure and support to the skin. The dermis contains blood vessels, nerves, hair follicles, sweat glands, and oil glands. It is also responsible for the production of collagen and elastin, which give the skin its strength and flexibility. The dermis can be further divided into two layers: the papillary dermis, which is the upper layer and contains finger-like projections called papillae that extend upwards into the epidermis, and the reticular dermis, which is the lower layer and contains thicker collagen bundles. Together, the epidermis and dermis make up the true skin.
"Rana catesbeiana" is the scientific name for the American bullfrog, which is not a medical term or concept. It belongs to the animal kingdom, specifically in the order Anura and family Ranidae. The American bullfrog is native to North America and is known for its large size and distinctive loud call.
However, if you are looking for a medical definition, I apologize for any confusion. Please provide more context or specify the term you would like me to define.
Mechanoreceptors are specialized sensory receptor cells that convert mechanical stimuli such as pressure, tension, or deformation into electrical signals that can be processed and interpreted by the nervous system. They are found in various tissues throughout the body, including the skin, muscles, tendons, joints, and internal organs. Mechanoreceptors can detect different types of mechanical stimuli depending on their specific structure and location. For example, Pacinian corpuscles in the skin respond to vibrations, while Ruffini endings in the joints detect changes in joint angle and pressure. Overall, mechanoreceptors play a crucial role in our ability to perceive and interact with our environment through touch, proprioception (the sense of the position and movement of body parts), and visceral sensation (awareness of internal organ activity).
Type II keratins are a group of intermediate filament proteins that are primarily expressed in epithelial cells. They are part of the keratin family, which is divided into two types (Type I and Type II) based on their acidic or basic isoelectric point. Type II keratins have a basic isoelectric point and include several subtypes such as KRT2, KRT3, KRT4, KRT10, KRT12, and others.
Type II keratins form heteropolymers with Type I keratins to provide structural support and integrity to epithelial cells. They are essential for the maintenance of cell shape, polarity, and mechanical resistance to stress. Mutations in type II keratin genes have been associated with several human genetic disorders, including epidermolysis bullosa simplex, a blistering skin disorder, and some forms of hair loss.
In summary, Type II keratins are a group of basic intermediate filament proteins that form heteropolymers with Type I keratins to provide structural support and integrity to epithelial cells.
The spiral ganglion is a structure located in the inner ear, specifically within the cochlea. It consists of nerve cell bodies that form the sensory component of the auditory nervous system. The spiral ganglion's neurons are bipolar and have peripheral processes that form synapses with hair cells in the organ of Corti, which is responsible for converting sound vibrations into electrical signals.
The central processes of these neurons then coalesce to form the cochlear nerve, which transmits these electrical signals to the brainstem and ultimately to the auditory cortex for processing and interpretation as sound. Damage to the spiral ganglion or its associated neural structures can lead to hearing loss or deafness.
Scanning electron microscopy (SEM) is a type of electron microscopy that uses a focused beam of electrons to scan the surface of a sample and produce a high-resolution image. In SEM, a beam of electrons is scanned across the surface of a specimen, and secondary electrons are emitted from the sample due to interactions between the electrons and the atoms in the sample. These secondary electrons are then detected by a detector and used to create an image of the sample's surface topography. SEM can provide detailed images of the surface of a wide range of materials, including metals, polymers, ceramics, and biological samples. It is commonly used in materials science, biology, and electronics for the examination and analysis of surfaces at the micro- and nanoscale.
Auditory brainstem evoked potentials (ABEPs or BAEPs) are medical tests that measure the electrical activity in the auditory pathway of the brain in response to sound stimulation. The test involves placing electrodes on the scalp and recording the tiny electrical signals generated by the nerve cells in the brainstem as they respond to clicks or tone bursts presented through earphones.
The resulting waveform is analyzed for latency (the time it takes for the signal to travel from the ear to the brain) and amplitude (the strength of the signal). Abnormalities in the waveform can indicate damage to the auditory nerve or brainstem, and are often used in the diagnosis of various neurological conditions such as multiple sclerosis, acoustic neuroma, and brainstem tumors.
The test is non-invasive, painless, and takes only a few minutes to perform. It provides valuable information about the functioning of the auditory pathway and can help guide treatment decisions for patients with hearing or balance disorders.
Fibroblast Growth Factor 5 (FGF5) is a protein that belongs to the fibroblast growth factor family, which plays crucial roles in various biological processes such as cell survival, proliferation, migration, and differentiation. Specifically, FGF5 is involved in regulating hair growth and development. It has been shown to inhibit the transition of hair follicles from the anagen (growth) phase to the catagen (regression) phase, thereby affecting the length and cycle of hair growth.
In medical terms, FGF5 is a gene that encodes for this particular fibroblast growth factor protein. Mutations in the FGF5 gene can lead to abnormalities in hair growth and development, such as those observed in certain forms of inherited hair disorders. Additionally, FGF5 has been implicated in various physiological and pathological conditions, including cancer progression and metastasis, making it a potential target for therapeutic interventions.
Regeneration in a medical context refers to the process of renewal, restoration, and growth that replaces damaged or missing cells, tissues, organs, or even whole limbs in some organisms. This complex biological process involves various cellular and molecular mechanisms, such as cell proliferation, differentiation, and migration, which work together to restore the structural and functional integrity of the affected area.
In human medicine, regeneration has attracted significant interest due to its potential therapeutic applications in treating various conditions, including degenerative diseases, trauma, and congenital disorders. Researchers are actively studying the underlying mechanisms of regeneration in various model organisms to develop novel strategies for promoting tissue repair and regeneration in humans.
Examples of regeneration in human medicine include liver regeneration after partial hepatectomy, where the remaining liver lobes can grow back to their original size within weeks, and skin wound healing, where keratinocytes migrate and proliferate to close the wound and restore the epidermal layer. However, the regenerative capacity of humans is limited compared to some other organisms, such as planarians and axolotls, which can regenerate entire body parts or even their central nervous system.
Hair
Thomas Hair
Chest hair
Hair Fairies
Layered hair
Kinky hair
Hair highlighting
Hair Brained
Hair care
Facial hair
Curtained hair
Hair (disambiguation)
Hair Love
Hair pipe
Hair ice
Rabbit hair
Hair straightening
Hair moss
Hair Cuttery
Lovelock (hair)
Gauntlet Hair
Ear hair
Blue hair
Hair High
Hair tie
Hair disease
AG Hair
Hair jewellery
Hair analysis
Black hair
Hair Thinning | Thinning Hair Care | Cult Beauty
Ovation Hair Independence Day Savings
Killer Hair - Rotten Tomatoes
MISSIO Hair - Retail Partnership Interest Form
Hair Wreaths & Tiaras - Etsy Israel
Petition Save Chuck\'s hair!
Why Does Hair Goes Gray?
Hair Care | Safeway
Nutrafol Hair | Sephora
Hair-lowering suggestion
LFHCfS (Hair Clubs)
Root hair Definition & Meaning - Merriam-Webster
Kelis -- Spanked Over $5,000 Hair Job
Shaving & Hair Removal: Shavers - Best Buy
Buy Lincoln's Hair-and His Assassin's
Benefits of aloe vera for hair
Animal hair products | Bartleby
PsychoHairapy: Healing Through Hair
I Hate My Hair
Natural Hair Products | Walgreens
Wax Hair Products | Sephora
laser hair
More COVID patients reporting hair loss - ABC News
5 Shampoos That Can Save Your Thinning Hair
College Of Hair Design Lincoln Ne | Fastweb
Hair Removal ES-EL2A-A541 - Panasonic Australia
Within a hair's breadth--forensic identificat | EurekAlert!
Buying The Right Hair Dryer - CBS News
Follicles16
- Often, the hair we auction comes without follicles, so you can't do a DNA test. (thedailybeast.com)
- Researchers have suggested that the benefits of aloe vera for hair may be due, at least in part, to its ability to stimulate blood circulation and improve delivery of oxygen and nutrition to hair follicles. (medicalnewstoday.com)
- Other theories about what causes COVID-related hair loss include a direct invasion of the virus into the hair follicles, which may interrupt the growth cycle. (go.com)
- Though Nioxin doesn't grow hair back, it is a therapeutic, medicated, product line that can clear out clogged follicles that may still be alive and encourage them to grow again. (yahoo.com)
- 1. Omega 3 Fatty Acids stimulate hair follicles growth and the sebaceous (fat) glands around them. (selfgrowth.com)
- Healthy blood vessels are necessary for transporting oxygen and nutrients to each part of the body, including the hair follicles. (medicalnewstoday.com)
- If the hair follicles do not receive enough oxygen and nutrients, this can affect the growth of hairs. (medicalnewstoday.com)
- In people with this condition, the immune system mistakenly attacks the hair follicles, causing hair to fall out in patches. (medicalnewstoday.com)
- In severe cases, multiple small red or pink bumps at hair follicles may be seen on any skin area that normally grows hair. (medicinenet.com)
- This skin condition is mostly seen in darker skin or African skin with facial hair because of the curvature of these patients' hair follicles. (medicinenet.com)
- Ingrown hairs do not affect the mouth, palms, vagina, or soles of the feet , as there are no hair follicles in these locations. (medicinenet.com)
- Hair is a protein filament that grows from follicles found in the dermis. (wikipedia.org)
- The human body, apart from areas of glabrous skin, is covered in follicles which produce thick terminal and fine vellus hair. (wikipedia.org)
- Tufted hair folliculitis affects hair follicles of the scalp. (medscape.com)
- First phase in hair cycle characterized by growth of hair follicles. (medscape.com)
- Eruptive vellus hair cysts (EVHCs) are thought to arise as a developmental abnormality of vellus hair follicles. (medscape.com)
Follicle22
- Every hair follicle contains pigment cells that continuously produce a chemical called melanin. (webmd.com)
- Anyway the fewer pigment cells in a follicle, the strand of hair no longer contains as much melanin, becoming a more transparent color as it grows, like gray, silver, or white. (webmd.com)
- Ghanima Abdullah , hair expert and beauty blogger , explains that you should look for a shampoo that will 'add volume, help grow new hair, and make the growth cycle longer for hair that's still in the follicle. (yahoo.com)
- The ingredients work to 'strengthen the hair follicle and block dihydrotestosterone (a hormone linked to hair loss) to create an optimum scalp environment to boost hair growth while strengthening the hair roots. (yahoo.com)
- She says this affordable product helps treat the scalp with biotin, or vitamin B7, which 'aids the overall production of keratin in the body and can increase the amount of hair follicle growth. (yahoo.com)
- Jae Pak , MD, an engineer and hair restoration specialist , supports the fact that biotin is one of the best ingredients to promote hair follicle regeneration. (yahoo.com)
- The multistep process breaks the natural bonds that exist in your hair follicle, then rebuilds these bonds into a different shape. (healthline.com)
- An ingrown hair happens when the sharp tip of the hair curls back or grows sideways into the skin of the hair follicle . (medicinenet.com)
- Flesh-colored red bumps with a hair shaft in their center are seen in shaved areas adjacent to the hair follicle opening. (medicinenet.com)
- Although ingrown hair is primarily caused by improper or aggressive hair removal , it sometimes occurs naturally as too much dead skin debris blocks the hair follicle opening, causing the hair to grow sideways. (medicinenet.com)
- The word "hair" usually refers to two distinct structures: the part beneath the skin, called the hair follicle, or, when pulled from the skin, the bulb or root. (wikipedia.org)
- The shape of the follicle determines the shape of the cortex, and the shape of the fiber is related to how straight or curly the hair is. (wikipedia.org)
- Hair growth begins inside the hair follicle. (wikipedia.org)
- The only "living" portion of the hair is found in the follicle. (wikipedia.org)
- Other structures of the hair follicle include the oil producing sebaceous gland which lubricates the hair and the arrector pili muscles, which are responsible for causing hairs to stand up. (wikipedia.org)
- The root of the hair ends in an enlargement, the hair bulb, which is whiter in color and softer in texture than the shaft and is lodged in a follicular involution of the epidermis called the hair follicle. (wikipedia.org)
- Both of these pigments are melanin types, produced inside the hair follicle and packed into granules found in the fibers. (wikipedia.org)
- Biopsy specimens demonstrate convergence of follicular infundibula, with multiple hairs emerging from a single follicular opening, while the lower portions of the hair follicle are separate and unaffected by the scarring process. (medscape.com)
- In the original report of this entity, Smith and Sanderson suggested that new follicular epithelium forms around groups of hair shafts that remain after destruction of the upper portion of the follicle. (medscape.com)
- Short interphase between anagen and telogen hair phase, characterized by involution of the hair follicle. (medscape.com)
- Characterized as the resting phase of the hair follicle. (medscape.com)
- A predisposition exists for follicular occlusion at the level of the infundibulum, which results in cystic dilatation of the proximal hair follicle and secondary atrophy of the hair bulb. (medscape.com)
Telogen phase2
- Certain inflammatory markers, called interleukins, become elevated during COVID, which could be causing a premature shifting of the hairs into the telogen phase, Young said. (go.com)
- Your hair usually enters something called the telogen phase when the actual hair itself is at rest and you see natural shedding as a result,' she explains. (yahoo.com)
Breakage5
- Ovation Cell Therapy Hair and Scalp Treatment's proprietary formula delivers high levels of vital proteins, key vitamins, botanical extracts and amino acids to the hair and scalp, resulting in reduced breakage. (prweb.com)
- Cell Therapy has been clinically proven to reduce hair breakage by over 80% after just one use. (prweb.com)
- Hair breakage, damage, and dryness are common side effects of hair rebonding. (healthline.com)
- Hair is three times more susceptible to breakage when wet, so don't dry vigorously with the towel. (selfgrowth.com)
- The affected hairs are brittle and breakage is common, resulting in short hairs. (medscape.com)
Luxuriant Flowing Hair Club for Scientists5
- This may not meet the technical requirements for a formal Nomination to the Luxuriant Flowing Hair Club for Scientists , but I believe it merits further inquiry on behalf of that noble institution. (improbable.com)
- Charles DeLorey has joined the The Luxuriant Flowing Hair Club for Scientists™ (LFHCfS). (improbable.com)
- Nadiya Slobodenyuk has joined the The Luxuriant Flowing Hair Club for Scientists™ (LFHCfS). (improbable.com)
- Janne Cadamuro has joined the The Luxuriant Flowing Hair Club for Scientists™ (LFHCfS). (improbable.com)
- Peter Drake has joined the The Luxuriant Flowing Hair Club for Scientists™ (LFHCfS). (improbable.com)
20234
- 2023 This particular genus is small and slow, and bears a striking resemblance to plant root hairs . (merriam-webster.com)
- Corinne Purtill, Los Angeles Times , 13 July 2023 No bacteria, no root hairs ! (merriam-webster.com)
- 2023 Along with the seven members, Siwa celebrated their spunk with rainbow hair tinsel and to-the- root hair gems. (merriam-webster.com)
- Fast Five Quiz: Hair Loss (Alopecia) - Medscape - Jun 27, 2023. (medscape.com)
Brittle2
- Most feature multiple temperature settings and a cool blast button for drying brittle hair or for setting curl. (cbsnews.com)
- Deficient protein in the diet can result in loss of hair, brittle or fragile hair, and loss of hair color. (selfgrowth.com)
Shaft14
- Each strand of hair has two parts, the shaft, that's what we see, and the roots, which is anchored under the scalp. (webmd.com)
- And melanin gives the growing shaft of hair it's color. (webmd.com)
- Even though other types of DNA analysis can be conducted using the "mitochondrial DNA" embedded in the hair shaft itself, such tests are not sufficient to reliably identify a person and usually call for additional evidence. (eurekalert.org)
- Positive charges, from the common blow dryer, cause the cuticle covering of the hair shaft to open, causing the frizzies and a dull appearance. (cbsnews.com)
- the hair shaft, which is the hard filamentous part that extends above the skin surface. (wikipedia.org)
- A cross section of the hair shaft may be divided roughly into three zones. (wikipedia.org)
- The base of a hair's root (the "bulb") contains the cells that produce the hair shaft. (wikipedia.org)
- Netherton Syndrome is a rare autosomal recessive genodermatosis characterized by congenital ichthyosiform erythroderma, an atopic diathesis, and a characteristic hair-shaft abnormality known as trichorrhexis invaginata. (medscape.com)
- [ 1 ] first noted the association between hair-shaft defects (bamboo node) and ichthyosiform erythroderma. (medscape.com)
- [ 4 ] described a young girl with generalized scaly dermatitis and fragile nodular hair-shaft deformities, which he termed trichorrhexis nodosa. (medscape.com)
- Later, this was more appropriately renamed as trichorrhexis invaginata (bamboo hair) for a ball-and-socket-type hair-shaft deformity at the suggestion of Wilkinson et al. (medscape.com)
- Trichorrhexis invaginata, or bamboo hair, is a hair shaft abnormality that occurs as a result of an intermittent keratinizing defect of the hair cortex. (medscape.com)
- Incomplete conversion of the sulfhydryl -SH group onto S-S disulfide bonds in the protein of the cortical fibers leads to cortical softness and subsequent invagination of the fully keratinized distal hair shaft into the softer, abnormally keratinized proximal hair shaft. (medscape.com)
- Intussusception of the distal hair shaft into the proximal hair shaft results in a distinctive ball-and-socket hair shaft deformity. (medscape.com)
Hairstyles2
- No two hairs (or hairstyles) are the same. (adobe.com)
- Attitudes towards different forms of hair, such as hairstyles and hair removal, vary widely across different cultures and historical periods, but it is often used to indicate a person's personal beliefs or social position, such as their age, gender, or religion. (wikipedia.org)
Nails1
- Protein substance in hair and nails. (medscape.com)
1,0001
- Hair rebonding costs anywhere from $250 to over $1,000. (healthline.com)
Curly hair9
- Do types of hair, such as curly hair, react differently? (medicalnewstoday.com)
- Short hair requires a different strategy from long hair, just as curly hair demands totally different pencil or brush strokes from straight hair. (adobe.com)
- For curly hair, make small circular strokes to capture curls made of several strands. (adobe.com)
- With curly hair, I start with cloud-like motions," says Lamb. (adobe.com)
- Remember that curly hair tends to extend away from the head before falling downward. (adobe.com)
- Very curly hair does not care about gravity at all. (adobe.com)
- Wavy hair tends to have less body than curly hair, but it's still thick enough to stand out from the head. (adobe.com)
- If you have curly hair, make sure you find a dryer that comes with a diffuser, or make sure that you can get a diffuser that fits your dryer. (cbsnews.com)
- Although if you've got curly hair you're going to have to use a bristle brush). (askmen.com)
Dryers15
- Evangelista says the first step is to become familiar with the different types of hair dryers so you can avoid buying something more elaborate and expensive than you need. (cbsnews.com)
- There is a wide range of prices for new hair dryers and, while choosing a dryer because it is dirt cheap is never a good option, you can cut your costs by choosing one that has only the options that you will really use. (cbsnews.com)
- Inexpensive hair dryers ($5 to $20) can be found in almost any store. (cbsnews.com)
- Since most inexpensive hair dryers only come equipped with one temperature setting, you can literally blast your tresses to death with the unchecked heat from one of these models. (cbsnews.com)
- Moderately expensive hair dryers ($20 to $80) come equipped with most of the settings that you will need for daily use. (cbsnews.com)
- Most people with "normal" hair can do well with these dryers - and the good news is that they're becoming more sophisticated and developing some of the features more expensive models, like ionic and ceramic, already offer. (cbsnews.com)
- Professional hair dryers ($80 to $100-plus) can be purchased at a beauty supply store, a salon or through a professional catalogue. (cbsnews.com)
- While these hair dryers are geared toward repeated use by professionals, they can be beneficial at home if you are willing to pay the price. (cbsnews.com)
- Many of these professional dryers are quiet and feature new drying technologies such as ionic and ceramic energy to cut your hair drying time in half. (cbsnews.com)
- Ions are hot these days in the world of hair dryers. (cbsnews.com)
- Ionic hair dryers produce negatively charged ions, ostensibly causing the cuticle to remain flat, "trapping" moisture, thus eliminating the frizzies and giving hair more body. (cbsnews.com)
- Plus, they promise to dry hair faster than regular dryers and leave it shinier and smoother. (cbsnews.com)
- Ionic dryers are also supposed to banish the static electricity that results in a flyaway mess of hair. (cbsnews.com)
- Panasonic pioneered hair dryers with an external ion outlet. (panasonic.com)
- Unlike the best hair dryers , which can only dry your locks, and with the help of a barrel brush, add volume to your tresses, the best hair straighteners are an extremely versatile hair care appliance. (techradar.com)
Wash5
- It is waterproof so you can rinse the whole shaver under running water to wash away hairs to always keep it clean. (panasonic.com)
- Avoid using very hot or very cold water wash your hair more than once a day. (selfgrowth.com)
- Wash your hair then apply your product to the mid-lengths and ends. (askmen.com)
- Wash your hair then work a 5p coin-sized amount of product in your hands, run it through your hair and blow dry using your fingers, pushing the hair up and away from the base. (askmen.com)
- How often do you wash your hair? (medlineplus.gov)
Shampoo5
- Cell Therapy is designed to be used a few times a week for thicker, stronger, longer- healthier hair, after your shampoo and followed by your conditioner. (prweb.com)
- LOreal Paris EverPure Moisture Sulfate Free For Dry Hair Everpure Moisture Shampoo - 8.5 Fl. (safeway.com)
- Rthvi Replenivate Hair Strengthening Shampoo ($32), which helps solve the problem with 'accessible, reasonably-priced Ayurvedic formulas to support hair wellness. (yahoo.com)
- One of Abdullah's favorites is the OGX Thick Full Biotin Collagen Shampoo ($8), an extremely affordable option that includes biotin to help regrow hair and make existing hair stronger. (yahoo.com)
- Yoram Harth , a board-certified dermatologist and medical director of MDhair, believes modern shampoo should do more than just clean the hair. (yahoo.com)
100,0001
- You don't need to know exactly where each one of the 100,000 or more hairs on your subject's head fall, but you should know the length, style, texture, and volume of the hair. (adobe.com)
Strands10
- Fourteen strands of Thomas Jefferson's hair sold for almost $7,000 recently, while a lock of David Bowie 's hair is expected to be sold for $4,000 , or maybe more, this weekend. (thedailybeast.com)
- Some of Elvis's hair sold for $115,000 in 2002, while strands of Justin Bieber's hair secured a winning bid of just over $40,000 in 2011. (thedailybeast.com)
- That means the Biebs was seen as more desirable than the three strands of hair from Robert E, Lee, which sold for around $19,000 in 2009, and a braided lock belonging to General Custer, which sold for over $21,000 in 2013. (thedailybeast.com)
- There will also be a log cabin-shaped item, made out of strands of Lincoln's hair, which, said Slater, may sound odd, but in Victorian times hair was regularly used to make gift-objects like bracelets and rings. (thedailybeast.com)
- When you're happy with the shapes, fill them in with individual strands of hair, starting at the root and going outward. (adobe.com)
- Their approach involves finding out if two individual strands of hair belong to the same person based on the composition of hair dye products found on them. (eurekalert.org)
- The scientists conducted SERS and XRF analyses using portable devices to see if they could distinguish between single strands of hog hairs dyed with different products. (eurekalert.org)
- Using both techniques, the scientists were able to easily distinguish between five different dyes applied to individual strands of hog hair. (eurekalert.org)
- A responsible stylist will probably test out a few strands of your hair to see if your hair can handle hair rebonding. (healthline.com)
- The samples collected represented approximately 100 strands of the 3-cm segment of hair closest to the occipital region (the back portion) of the scalp. (cdc.gov)
Coarse1
- Ingrown hairs tend to be more common in areas with coarse hairs, like the bikini area in women, and beard and neck in men. (medicinenet.com)
Conditioner1
- Blue Magic Hair Conditioner - 12 Fl. (safeway.com)
Tightly3
- Hair is pulled tightly back from the face, which is then softened by many tight curls which frame the eyes and cheeks. (fiftiesweb.com)
- Individuals with thicker, tightly curled hairs, such as African Americans, tend to have the highest rate of problems with ingrown hairs, particularly in the beard area. (medicinenet.com)
- African-American individuals with thicker, coarser tightly curling hairs tend to have the highest rate of problems with ingrown hairs. (medicinenet.com)
Medically1
- An ingrown hair is medically harmless, yet it may become cosmetically disfiguring and lead to scarring, skin discoloration (referred to as post-inflammatory hyperpigmentation ), skin infection , and rarely keloid scar formation. (medicinenet.com)
Cuticle7
- They infuse moisture and only cause minimal damage to the hair cuticle. (cbsnews.com)
- Stylists have become fans of ceramic brushes during the past several years because they style hair quickly without damaging the outer layer of the hair cuticle. (cbsnews.com)
- Because the relaxant is breaking down your hair cuticle on a cellular level, the relaxant step needs to be closely monitored so that your scalp and hair aren't damaged. (healthline.com)
- Hair smoothing processes aim to smooth down your hair cuticle, making it less frizzy and adding softness. (healthline.com)
- This increases the chances of damaging the hair and breaking the cuticle. (techradar.com)
- Hair fibers have a structure consisting of several layers, starting from the outside: the cuticle, which consists of several layers of flat, thin cells laid out overlapping one another as roof shingles the cortex, which contains the keratin bundles in cell structures that remain roughly rod-like the medulla, a disorganized and open area at the fiber's center Each strand of hair is made up of the medulla, cortex, and cuticle. (wikipedia.org)
- The bulb of hair consists of fibrous connective tissue, glassy membrane, external root sheath, internal root sheath composed of epithelium stratum (Henle's layer) and granular stratum (Huxley's layer), cuticle, cortex and medulla. (wikipedia.org)
Lesions2
- Staphylococcal organisms frequently are cultured from lesions of tufted hair folliculitis, but their role in pathogenesis is unclear. (medscape.com)
- S aureus frequently, but not invariably, is cultured from lesions of tufted hair folliculitis. (medscape.com)
Thick7
- I just have too much superfrizzy, thick hair. (oprah.com)
- Even though my hair is still thick, it's so much more manageable. (oprah.com)
- I have short thick hair with lots of bends and cowlicks. (sephora.com)
- It's possible you've noticed your once thick, lustrous hair is finer than it used to be. (yahoo.com)
- Very few individuals have rich thick hair well into their senior years. (selfgrowth.com)
- If you've got thicker hair, you'll likely need to increase the heat to a medium or high setting, depending on how thick and long it is. (techradar.com)
- In this instance, it's better for the hair to remain on a low heat, regardless of how thick or thin your hair is. (techradar.com)
Texture10
- Featuring a perfect balance of oils and waxes, this pomade helps fight frizz and improves manageability for all hair types and texture. (sephora.com)
- Hair rebonding is a chemical process that changes your hair's natural texture and creates a smooth, straight style. (healthline.com)
- First, your stylist washes your hair and lets it air-dry into your natural texture. (healthline.com)
- This removes dirt and oils and also gives your stylist insight into what your natural hair texture is. (healthline.com)
- Some people who opt for hair rebonding notice that their hair still has a bit of its natural texture and don't feel like the treatment is effective. (healthline.com)
- it depends upon your hair type and texture, activities in which you participate, and how often you use hair products. (selfgrowth.com)
- They can be used to create curls, waves, S-bends, and flicks, all of which add texture and movement to the hair in ways that straightening can't. (techradar.com)
- Dry hair is hair that does not have enough moisture and oil to maintain its normal sheen and texture. (medlineplus.gov)
- A systematic review of typical newborn scalp hair characteristics such as color, quantity, texture, direction of growth, hairlines, and hair whorls is provided. (medscape.com)
- The initial assessment of all newborns should include a systematic assessment of hair color, quantity, texture, direction of growth, hairlines, and hair whorls. (medscape.com)
Puberty1
- An ingrown hair is a very common skin condition occurring primarily after puberty . (medicinenet.com)
Blow dry4
- Next, your stylist sections your hair, much like they would for a blow-dry or hair dye treatment. (healthline.com)
- Sam was very professional from start to finish, very happy with my colour, cut and blow dry then to finish my hair was put up for occasion! (yell.com)
- If you've got curly or natural hair, swap a rough dry for a blow-dry in order to create a smoother, straighter finish from which to work with. (techradar.com)
- Check out how to blow-dry your hair for plenty of tips and tricks. (techradar.com)
Eyebrow1
- This is the only brow wax I've tried that actually holds my eyebrow hairs up. (sephora.com)
Analyze2
- Because both analytical methods used are almost non-destructive, the strategy proposed in this study could be used to quickly analyze hairs found in crime scenes on-site before they are sent for DNA analysis. (eurekalert.org)
- In this work, we analyze the narratives of black women on their hair, selfcare practices and appearence, which bring their experiences and reflections on how these (trans)formed their identities. (bvsalud.org)
Growth22
- Spanning growth-stimulating supplements, root-boosting serums and scalp-balancing treatments, our range boasts award-winning, hair-thinning heroes to nurse your hair back to its bountiful best. (cultbeauty.co.uk)
- Advocates of using aloe vera for hair health point to its plentiful supply of vitamins , minerals, and other ingredients linked to hair growth. (medicalnewstoday.com)
- Does it work for hair growth? (medicalnewstoday.com)
- According to the Trichological Society, an independent association for professionals involved in the study and treatment of the human scalp and hair, the average rate of hair growth is 1 centimeter per month . (medicalnewstoday.com)
- Since SD can, in some cases, lead to temporary hair loss, this is one clear use of aloe vera for hair growth. (medicalnewstoday.com)
- Also, there is speculation that since aloe vera contributes to a healthy scalp, which is important for healthy hair growth, this bolsters arguments about aloe vera's effectiveness in hair care. (medicalnewstoday.com)
- Telogen effluvium occurs when the growth cycle of hair is disrupted, induced by traumas such as surgery, illness, or any stressful life event, such as moving or a pregnancy. (go.com)
- There are three phases that hair goes through during a growth cycle: anagen, catagen and telogen. (go.com)
- Anagen is the active growth phase, catagen is the transitional phase, and telogen is the resting phase -- in which hair sheds. (go.com)
- The opposite is the anagen phase, which promotes growth and sees less hair loss. (yahoo.com)
- According to studies, he says, 'biotin supplementation is proven effective for improving hair and nail growth. (yahoo.com)
- Nioxin was originally designed for chemo patients to help their hair grow back by creating the best environment to encourage hair growth,' she explains. (yahoo.com)
- If you like the way it looks, you won't have to repeat the process until your hair has an inch or two of new growth at the roots. (healthline.com)
- Scalp massage increases blood circulation and may promote hair growth, as may essential oil therapy. (selfgrowth.com)
- Most common interest in hair is focused on hair growth, hair types, and hair care, but hair is also an important biomaterial primarily composed of protein, notably alpha-keratin. (wikipedia.org)
- Scalp hair growth and patterning are closely associated with the development of the central nervous system. (medscape.com)
- Normal cycles of hair growth and loss are discussed. (medscape.com)
- Patterns of hair growth can be abnormal, serving as external markers of underlying structural brain and central nervous system abnormalities. (medscape.com)
- [ 3 , 4 ] An understanding of the embryologic development and cycles of scalp hair growth will aid the clinician in assessing infants of various gestational and postnatal ages. (medscape.com)
- Condition characterized by excessive growth of hair. (medscape.com)
- Usually describes lack of any hair growth. (medscape.com)
- A pattern of hair growth characterized by a clockwise spiral or coil. (medscape.com)
Vellus hair19
- Eruptive vellus hair cysts (EVHCs) were first described in 1977 by Esterly and colleagues who reported 2 children with symmetrically distributed follicular papules on the chest and flexor extremities. (medscape.com)
- however, eruptive vellus hair cysts (EVHCs) may occur more frequently than is suggested by reports, possibly because the diagnosis is only definitively confirmed with biopsy. (medscape.com)
- Eruptive vellus hair cysts (EVHCs) have no racial predilection. (medscape.com)
- In familial cases, eruptive vellus hair cysts (EVHCs) are first noted at birth or during infancy. (medscape.com)
- Esterly NB, Fretzin DF, Pinkus H. Eruptive vellus hair cysts. (medscape.com)
- Binhlam JQ, Gross AS, Onadeko OO, Dutt PL, King LE Jr. Acneiform eruption due to eruptive vellus hair cysts. (medscape.com)
- Eruptive vellus hair cysts presenting as multiple periorbital papules in a 13-year-old boy. (medscape.com)
- A case of eruptive vellus hair cysts that developed on the labium major. (medscape.com)
- Benoldi D, Allegra F. Congenital eruptive vellus hair cysts. (medscape.com)
- Familial occurrence of eruptive vellus hair cysts. (medscape.com)
- Yanik ME, Aliagaoglu C, Güvenç SC, Yildirim U, Albayrak H. Eruptive vellus hair cysts occurring on the ears. (medscape.com)
- Unilateral eruptive vellus hair cysts occurring on the face. (medscape.com)
- Eruptive vellus hair cysts presenting as bluish-grey facial discoloration masquering as naevus of Ota. (medscape.com)
- Li Y, Shan SJ, Luo S, Zhang S, Liu Q. Eruptive vellus hair cysts in association with syringomas. (medscape.com)
- Eruptive vellus hair cyst in a patient with pachyonychia congenita. (medscape.com)
- Takeshita T, Takeshita H, Irie K. Eruptive vellus hair cyst and epidermoid cyst in a patient with pachyonychia congenita. (medscape.com)
- Romiti R, Festa Neto C. Eruptive vellus hair cysts in a patient with ectodermal dysplasia. (medscape.com)
- Anhidrotic ectodermal dysplasia with eruptive vellus hair cysts. (medscape.com)
- Mieno H, Fujimoto N, Tajima S. Eruptive vellus hair cyst in patients with chronic renal failure. (medscape.com)
Thinning Hair5
- Whether due to health, hormones, age or genes, thinning hair affects a lot of us but, help is at hand in the shape of our specialist edit for those undergoing follicular challenges. (cultbeauty.co.uk)
- Thinning hair can often signal hair loss, so it's important to take haircare steps to save your mane early on. (yahoo.com)
- Read on to discover the five shampoos that can help bring your thinning hair back to life. (yahoo.com)
- Since thinning hair is the first sign of hair loss, Meerika Khanna , founder of the Ayurvedic hair wellness brand Rthvi , believes 'people experiencing hair thinning should use shampoos specially created for hair thinning. (yahoo.com)
- On rare occasions, people have reported a link between metformin and thinning hair or hair loss. (medicalnewstoday.com)
Retention3
- Hair retention is most certainly controlled by your individual genetics, however there are other conditions that may influence the overall health of your hair. (selfgrowth.com)
- Your diet , the weather, toxins, pollution, and your overall approach to hair care influence your hair retention and health. (selfgrowth.com)
- Perifollicular inflammation is presumed to lead to retention of telogen hairs, compounding the appearance of tufting. (medscape.com)
Manageable2
- 93% of participants reported more manageable hair. (prweb.com)
- 1. Conditioning: Experts seem to agree that conditioning your hair after shampooing keeps your hair softer, shiny, and manageable. (selfgrowth.com)
Occurs2
- Telogen effluvium occurs when a larger proportion of hairs on the scalp shift into this resting phase, resulting in shedding at a higher rate. (go.com)
- Gray hair occurs when melanin production decreases or stops, while poliosis is white hair (and often the skin to which the hair is attached), typically in spots that never possessed melanin at all, or ceased for natural reasons, generally genetic, in the first years of life. (wikipedia.org)
Wavy hair4
- Presentation and Analysis 14 Summary of Research Findings 41 Conclusion 43 Works Cited 44 Appendix 46 Introduction For centuries, the beauty of Bengali women has been defined by their dark skin-tones, generous curves, sharp facial features and long, wavy hair. (bartleby.com)
- I have thin, wavy hair and I usually avoid wax products because they can easily make my hair appear dirty, but this product is truly a miracle product ! (sephora.com)
- To draw straight hair, follow the same steps as for wavy hair. (adobe.com)
- Just remember that straight hair tends to have less volume than curly or wavy hair, so it might sit a little closer to the head. (adobe.com)
Thicker hair1
- Blood and hair testing can reveal many surprises and therefore require many different solutions to detoxification and treatment which may lead to healthier thicker hair. (selfgrowth.com)
Beard2
- One type of ingrown hair is pseudofolliculitis, also called ' razor bumps ,' in which small red bumps appear on the beard area (lower face and neck) and may flare with repeat shaving. (medicinenet.com)
- Ingrown hairs most characteristically involve areas that are shaved, like the beard, bikini area, and legs. (medicinenet.com)
Products9
- The philosophy of Ovation Hair is to meet clients' high expectations with quality, nourishing and rejuvenating products that demonstrate proven effectiveness. (prweb.com)
- Ovation products include high quality ingredients, demonstrated to be safe and effective to create healthy hair. (prweb.com)
- We are excited that you are considering making a difference with us through beautiful hair products. (google.com)
- Shampoos and other hair products have not been shown to have a significant impact on this rate, which is primarily determined by genetics and an individual's health. (medicalnewstoday.com)
- Wax hair products are a great way to keep your hair looking good and feeling healthy. (sephora.com)
- Here are some of the best wax hair products available today. (sephora.com)
- However, it is not enough to distinguish between hair coloring products that contain or produce similar dyes. (eurekalert.org)
- To do this, we also relied on XRF analysis, which can detect the presence of metallic elements used in the ingredients of hair dye products. (eurekalert.org)
- I have had success with several products and some Chinese Herbs to restore hair. (selfgrowth.com)
Strand of hair2
- In crime scene investigations, a single strand of hair can make a huge difference in the evolution of a case or trial. (eurekalert.org)
- In a recent study published in Analytical Sciences , scientists at the Tokyo University of Science, Japan, developed a strategy for identifying criminals from a single strand of hair, leveraging the fact that hair dyes are becoming increasingly common. (eurekalert.org)
Human scalp1
- Previous research has established that the mercury concentration in human scalp hair largelyrepresents dietary methyl mercury exposure, methyl mercury being a known human neurotoxin. (cdc.gov)
Symptoms7
- A study published in Nature Medicine last month found that hair loss was one of a wide range of symptoms that post-COVID patients reported to their primary care physicians. (go.com)
- What are symptoms of an ingrown hair? (medicinenet.com)
- Few studies have investigated body-dysmorphic, hoarding, hair-pulling, and skin-picking symptoms in adolescents and how they relate to mental health, quality of life, suicide attempts, and non-suicidal self-harm. (lu.se)
- A sample of 5,345 adolescents (12-18 years) completed dimensional measures of body-dysmorphic, hoarding, hair-pulling, and skin-picking symptoms. (lu.se)
- Body-dysmorphic, hoarding, hair-pulling, and skin-picking symptoms were moderately to strongly associated with obsessive-compulsive symptoms, internalizing symptoms, externalizing symptoms, and poor quality of life. (lu.se)
- Those with significant body-dysmorphic, hoarding, hair-pulling, and skin-picking symptoms were much more likely to have attempted suicide and engaged in non-suicidal self-harm during the last twelve months than those without such symptoms. (lu.se)
- Limitations are the sole use of self-report and a sample from only two regions in Spain, but findings suggest that body-dysmorphic, hoarding, hair-pulling, and skin-picking symptoms are common and impairing during adolescence. (lu.se)
Curls2
- Shorter hair, brushed across from a side part, dips gently over one eye, curls in a charming poof. (fiftiesweb.com)
- If you've got thin and fine hair, you'll be able to achieve curls and waves with your straighteners on a low setting. (techradar.com)
Grow9
- Chelsea Avila, Allure , 24 Aug. 2022 Once the tree roots reach the edge, the leading root hairs grow through but then are pinched by the fabric. (merriam-webster.com)
- While there are still many unanswered questions about COVID-related hair loss, experts say the good news is that it appears to be temporary and clinicians should reassure patients that their hair will very likely grow back. (go.com)
- That shedding could last for up to six months, and it typically takes about a year and a half for hair to grow back, she added. (go.com)
- More hair may fall out, or new hair may grow at a slower rate than usual. (medicalnewstoday.com)
- Often the bumps start a few days to weeks after hair removal and get worse as the hairs grow back. (medicinenet.com)
- At what age does pubic hair grow? (answers.com)
- How can you grow your pubic hair faster? (answers.com)
- This organ is located in the dermis and maintains stem cells, which not only re-grow the hair after it falls out, but also are recruited to regrow skin after a wound. (wikipedia.org)
- Your hair will grow back starting around four to six weeks after your last chemotherapy treatment. (cdc.gov)
Alopecia6
- Tufted hair folliculitis is a rare, progressive pattern of scarring alopecia that affects the scalp. (medscape.com)
- Tufts of hair associated with scars have been described in association with several other forms of alopecia. (medscape.com)
- It is probable that tufted hair folliculitis represents an advanced stage of follicular injury seen in several types of scarring alopecia. (medscape.com)
- Tufted hair folliculitis probably represents an advanced stage of follicular damage common to several different forms of scarring alopecia. (medscape.com)
- Androgenetic alopecia is a genetically determined disorder , and affected individuals usually have a typical patterned distribution of hair loss. (medscape.com)
- Alopecia areata is a recurrent nonscarring type of hair loss that can affect any hair-bearing area. (medscape.com)
Treatments3
- The two tweezer tips that grip the hair align beautifully, so that even hair as short as 0.5 mm, which would not be removed by wax treatments, gets gripped and removed from the root. (panasonic.com)
- Rebonding is similar to but different from other hair smoothing processes, such as keratin treatments and Brazilian hair straightening . (healthline.com)
- New treatments may help with hair loss, so ask your doctor about that if it's a big concern for you. (cdc.gov)
Back6
- It's not that Christina had too much hair but that its shape-short in the back and longer in the front-was the opposite of what it should be, so it fell forward into her face. (oprah.com)
- But hair rebonding actually breaks apart the hydrogen bonds in your hair before fusing them back together. (healthline.com)
- Below Center - a common look was to sweep the hair straight back at the crown. (fiftiesweb.com)
- Using sectioning clips, part your hair into four - two sections either side of your parting, and two sections that run from above your ear and are split down the back of your head. (techradar.com)
- Use a normal straight comb to make a side parting, comb your hair over and then comb the back and sides. (askmen.com)
- To give body and hold, spray gel into your roots - I recommend Matérialiste by Kérastase and use your fingers to lift the hair back. (askmen.com)
Type6
- Each type of hair requires its own kind of care. (medicalnewstoday.com)
- The most common type of hair loss seen in post-COVID patients is telogen effluvium. (go.com)
- Whatever type of hair you want to draw, begin with reference photos. (adobe.com)
- To do so, look for some of the bells and whistles that could be highly beneficial to your type of hair. (cbsnews.com)
- Metformin can help treat type 2 diabetes and polycystic ovary syndrome, but some people worry that it may cause hair loss. (medicalnewstoday.com)
- Choosing the correct heat setting for your hair type will minimize damage and make sure you achieve the best finish and style as possible. (techradar.com)
Salon7
- Fashion journalist Lacey Smithsonian (Maggie Lawson) investigates a series of murders at her friend's (Sadie LeBlanc) hair salon. (rottentomatoes.com)
- Hair rebonding is typically performed by a licensed cosmetologist at your local hair salon. (healthline.com)
- The cost of the treatment will depend on which salon you choose to go to, whether you opt for nontoxic ingredients (which are often pricier), and how long and well-maintained your hair is. (healthline.com)
- When the sexy leading leady showed up to met with Paramount studio execs, they sent her to the hair salon for a hair emergency. (radaronline.com)
- The Sally Hershberger Los Angeles hair salon was closed, but had to open on a Monday just for the starlet. (radaronline.com)
- To help simplify the process and expand your styling repertoire, we've spoken to experts from salon hair care appliance brands GHD and Revamp Professional and Hairstory to find out how to curl your hair with straighteners. (techradar.com)
- In a pilot program run by the HEEAT Research Lab, investigators recruited two hair stylists and salon owners to join forces as part of their research team. (medscape.com)
Removal2
- Panasonic's wet/dry epilator comes with a 30% wider head* and double discs with 60 tweezers to enable fast, highly efficient hair removal. (panasonic.com)
- Other hair-removal methods, including waxing, as well as common friction from tight clothing, may worsen the situation. (medicinenet.com)
Shampoos1
- Shampoos and Conditioners, their flagship product Cell Therapy Hair and Scalp Treatment or a plethora of other fan favorites. (prweb.com)
Loss28
- Williams, who arrived at the outpost last week with long flowing - and floating - hair, arranged to have her locks cut last Sunday and the clippings stowed on Discovery for a future hairpiece to be donated to a patient suffering from long-term medical hair loss. (improbable.com)
- Some nutrients have a marked effect on hair quality, and nutritional deficiencies can lead to hair loss . (medicalnewstoday.com)
- More patients are reporting hair loss after a bout with the virus. (go.com)
- Dr. Brian Abittan, the director of skin and hair rejuvenation at Mount Sinai Health System in New York, said that he sees multiple patients a week who have reported hair loss after COVID-19. (go.com)
- Some evidence has shown that there is an increased risk of hair loss following COVID infection. (go.com)
- Additionally, a study in the Lancet journal estimated that 22% of patients who were hospitalized with COVID experienced hair loss after their illness. (go.com)
- The assumption is that COVID-related hair loss is very similar to stress-related hair loss,' Abittan said. (go.com)
- There are a few hypotheses about why infection may be causing hair loss in COVID patients, one of which being patients' heightened state of inflammation. (go.com)
- The more severe cases are probably having more severe hair loss,' Young said. (go.com)
- However, she added that the causes of hair loss in patients with severe COVID could be multifactorial, linked to the medications they took or the procedures they underwent. (go.com)
- Abittan said that to determine the best course of treatment, clinicians should evaluate patients to ensure there are no other underlying causes of hair loss, such as a thyroid issue. (go.com)
- Natalie Dixon , the editor-in-chief of fashion and beauty magazine Chic Style Collective, has suffered from hair loss and loves Nioxin ($45), which is specially formulated by trichologists. (yahoo.com)
- 1. Zinc deficiency can cause hair loss. (selfgrowth.com)
- Other nutrient deficiencies and some illnesses such as hypothyroidism and anemias can cause hair loss. (selfgrowth.com)
- If you notice hair loss that is inexplicable come in for an evaluation or see your health provider. (selfgrowth.com)
- Is hair loss a side effect of metformin? (medicalnewstoday.com)
- In this article, we explore the possible relationship between metformin and hair loss , as well as relevant research. (medicalnewstoday.com)
- We also describe some of the treatment options for reducing the impact of hair loss if it does occur. (medicalnewstoday.com)
- Does metformin cause hair loss? (medicalnewstoday.com)
- Metformin may play an indirect role in hair loss. (medicalnewstoday.com)
- Doctors used clinical tests to rule out any systemic or skin diseases that might be contributing to hair loss. (medicalnewstoday.com)
- The authors of the report concluded that there was a possible association between the medication and hair loss. (medicalnewstoday.com)
- However, as this case study involved just one person, it is difficult to move from these findings to a general trend suggesting a significant relationship between metformin and hair loss. (medicalnewstoday.com)
- Metformin might also reduce the risk of hair loss in people who take it to treat PCOS, according to a randomized clinical trial from 2016 . (medicalnewstoday.com)
- As hair loss can be a symptom of PCOS, treating the condition can reduce its effects. (medicalnewstoday.com)
- Another possibility is that metformin may indirectly contribute to hair loss in people with diabetes. (medicalnewstoday.com)
- Hair loss is a potential symptom of both of these conditions. (medicalnewstoday.com)
- Other potential causes of hair loss may relate to a person's medical condition rather than the use of metformin to treat it. (medicalnewstoday.com)
Dryer7
- If you've ever gone to the store in search of the perfect hair dryer, you may have found yourself overwhelmed by all the styles, shapes and sizes that line the shelves. (cbsnews.com)
- So The Early Show 's stylist to the stars, David Evangelista , visited the show with some helpful hints on how to find the best hair dryer to meet your needs. (cbsnews.com)
- They're also OK if your hair is extremely short or if you only use a hair dryer briefly to set your gel. (cbsnews.com)
- The low-noise hair dryer with ionic conditioning and powerful airflow delivers comfortable and quick blow-drying at all time. (panasonic.com)
- Rough dry your hair by blasting it with a hair dryer on a low heat to remove all remaining water. (techradar.com)
- I wouldn't use a blow dryer or any tools - once you start using a blow dryer you smooth out the hair and it becomes more of a 'done' look. (askmen.com)
- Do you use a hair dryer? (medlineplus.gov)
Healthier hair1
- 100% of participants reported healthier hair. (prweb.com)
Racial predilection1
- No racial predilection is recognized for tufted hair folliculitis. (medscape.com)
People6
- As to why people collect hair, Slater said, "It's the same desire to own as personal objects as possible-it's why there's great interest in hats and walking sticks of well-known people. (thedailybeast.com)
- Dixon suggests that people who are losing their hair also get checked by a doctor for low iron levels, which could be the cause. (yahoo.com)
- For any hair drawing, especially in the beginning, I would definitely use a lot of reference photos or even just watch videos of people with different types of hair," says artist Vanessa Lamb. (adobe.com)
- People who have their hair chemically straightened every 5 to 8 weeks may be more likely to develop breast cancer, according to a large 2019 study . (healthline.com)
- Or, for people with unruly hair, a gel. (askmen.com)
- People with straight hair have round hair fibers. (wikipedia.org)
Loses1
- Marie Burke , the resident hair and skin expert at O'Flynn Medical, explains that 'hair shedding is a completely normal process, where the average person loses 'about 100 hairs per day. (yahoo.com)
Medscape1
- Cite this: Scalp Hair Characteristics in the Newborn Infant - Medscape - Dec 01, 2003. (medscape.com)
Curl5
- Preparing to curl your hair is the same as straightening it. (techradar.com)
- Just as you shouldn't straighten your hair when it's wet, you also shouldn't curl it when there is any water trapped inside. (techradar.com)
- We've tried various ways to curl our hair with straighteners, including wrapping the hair around the plates, and continually rotating the hair as the styler moves through it. (techradar.com)
- Hold the straighteners with the plates facing towards the floor and gently clamp the hair where you want the curl to start. (techradar.com)
- I've heard stories about that guy that would make your hair curl . (merriam-webster.com)
Clinically1
- This article reviews the clinically relevant embryology related to fetal scalp hair formation. (medscape.com)
Follicular2
- Hair that is cut close to or below the follicular opening may have a sharp tip that can pierce the skin to cause an ingrown hair. (medicinenet.com)
- [ 1 ] Its characteristic feature is the presence of groups of 10-15 hairs emerging from a single follicular opening. (medscape.com)
Specimens2
- Hair specimens were collected, processed, packaged, and stored under appropriate ambient temperature conditions to avoid contamination. (cdc.gov)
- email: pe.varaldo@ the presence of B. quintana DNA in 7 (11%) of 66 from the hair (Table) univpm.it nits, larvae, and adult lice collected of 4 of the 7 dually infested persons from mono-infested and dually infest- were positive for B. quintana DNA ed persons and determined the geno- (online Technical Appendix Table 1 types of the specimens. (cdc.gov)
Typically2
- Hair rebonding typically uses formaldehyde or aldehyde to break apart the bonds of your hair. (healthline.com)
- Hair mercury (HRXHG) was typically analyzed in batches of 20-40 samples, and quantification of the analyte was carried out by using batch-specific standard calibration curves. (cdc.gov)
Formaldehyde1
- A chemical, usually formaldehyde, then crosslinks the new design of your hair structure in a pin-straight alignment. (healthline.com)
Chemically1
- Letting Ebony's hair go naturally curly would emphasize the roundness of her face, so she should keep it sleek (it's been chemically relaxed). (oprah.com)
Abnormalities2
- A number of genetic, metabolic, and neurologic disorders are associated with recognizable scalp hair abnormalities. (medscape.com)
- [ 1 3 ] A number of autosomal dominant, autosomal recessive, and X-linked single gene disorders are characterized by hair abnormalities. (medscape.com)
Short4
- For extremely short hair, it's even more important to pay attention to the directional flow because shorter hair can have a greater variety of direction. (adobe.com)
- Hair Workshop has been established in Paddock Wood for over 30 years, a short walk from Paddock Wood Station and the main hustle and bustle of the town. (yell.com)
- Twiggy and Vidal Sassoon each had a profound influence on short hair styles. (fiftiesweb.com)
- The model at the right represents the more mainstream short hair style, while the one at left below reflects the British influence. (fiftiesweb.com)
Skin7
- Tammy's hair was overbleached-too light and too similar to her skin color, so Pipino gave her a single-process dark red to add depth and definition. (oprah.com)
- This creamy, multitasking product glides on skin and hair smoothly to create clean, defined brows. (sephora.com)
- Ingrown hairs are a common, benign skin disorder seen in all age groups. (medicinenet.com)
- Often, a small pinpoint (often dark) part of the underlying hair may be seen under the skin bump . (medicinenet.com)
- Rarely, ingrown hair may also appear in other skin parts, such as the eyelid or thighs. (medicinenet.com)
- An ingrown hair can lead to a localized foreign-body inflammatory reaction, which causes pinpoint red or pink bumps on the skin. (medicinenet.com)
- Hair grows everywhere on the external body except for mucus membranes and glabrous skin, such as that found on the palms of the hands, soles of the feet, and lips. (wikipedia.org)