An acute infectious, usually self-limited, disease believed to represent activation of latent varicella-zoster virus (HERPESVIRUS 3, HUMAN) in those who have been rendered partially immune after a previous attack of CHICKENPOX. It involves the SENSORY GANGLIA and their areas of innervation and is characterized by severe neuralgic pain along the distribution of the affected nerve and crops of clustered vesicles over the area. (From Dorland, 27th ed)
Virus infection of the Gasserian ganglion and its nerve branches characterized by pain and vesicular eruptions with much swelling. Ocular involvement is usually heralded by a vesicle on the tip of the nose. This area is innervated by the nasociliary nerve.
An attenuated vaccine used to prevent and/or treat HERPES ZOSTER, a disease caused by HUMAN HERPESVIRUS 3.
Pain in nerves, frequently involving facial SKIN, resulting from the activation the latent varicella-zoster virus (HERPESVIRUS 3, HUMAN). The two forms of the condition preceding the pain are HERPES ZOSTER OTICUS; and HERPES ZOSTER OPHTHALMICUS. Following the healing of the rashes and blisters, the pain sometimes persists.
The type species of VARICELLOVIRUS causing CHICKENPOX (varicella) and HERPES ZOSTER (shingles) in humans.
A highly contagious infectious disease caused by the varicella-zoster virus (HERPESVIRUS 3, HUMAN). It usually affects children, is spread by direct contact or respiratory route via droplet nuclei, and is characterized by the appearance on the skin and mucous membranes of successive crops of typical pruritic vesicular lesions that are easily broken and become scabbed. Chickenpox is relatively benign in children, but may be complicated by pneumonia and encephalitis in adults. (From Dorland, 27th ed)
A group of acute infections caused by herpes simplex virus type 1 or type 2 that is characterized by the development of one or more small fluid-filled vesicles with a raised erythematous base on the skin or mucous membrane. It occurs as a primary infection or recurs due to a reactivation of a latent infection. (Dorland, 27th ed.)
A live, attenuated varicella virus vaccine used for immunization against chickenpox. It is recommended for children between the ages of 12 months and 13 years.
A GUANOSINE analog that acts as an antimetabolite. Viruses are especially susceptible. Used especially against herpes.
A syndrome characterized by facial palsy in association with a herpetic eruption of the external auditory meatus. This may occasionally be associated with tinnitus, vertigo, deafness, severe otalgia, and inflammation of the pinna. The condition is caused by reactivation of a latent HERPESVIRUS 3, HUMAN infection which causes inflammation of the facial and vestibular nerves, and may occasionally involve additional cranial nerves. (From Adams et al., Principles of Neurology, 6th ed, p757)
Infection of the genitals (GENITALIA) with HERPES SIMPLEX VIRUS in either the males or the females.
Inflammation of brain tissue caused by infection with the varicella-zoster virus (HERPESVIRUS 3, HUMAN). This condition is associated with immunocompromised states, including the ACQUIRED IMMUNODEFICIENCY SYNDROME. Pathologically, the virus tends to induce a vasculopathy and infect oligodendrocytes and ependymal cells, leading to CEREBRAL INFARCTION, multifocal regions of demyelination, and periventricular necrosis. Manifestations of varicella encephalitis usually occur 5-7 days after onset of HERPES ZOSTER and include HEADACHE; VOMITING; lethargy; focal neurologic deficits; FEVER; and COMA. (From Joynt, Clinical Neurology, 1996, Ch 26, pp29-32; Hum Pathol 1996 Sep;27(9):927-38)
Skin diseases caused by viruses.
HERPES ZOSTER but without eruption of vesicles. Patients exhibit the characteristic pain minus the skin rash, sometimes making diagnosis difficult.
A genus of the family HERPESVIRIDAE, subfamily ALPHAHERPESVIRINAE, consisting of herpes simplex-like viruses. The type species is HERPESVIRUS 1, HUMAN.
Intense or aching pain that occurs along the course or distribution of a peripheral or cranial nerve.
Agents used in the prophylaxis or therapy of VIRUS DISEASES. Some of the ways they may act include preventing viral replication by inhibiting viral DNA polymerase; binding to specific cell-surface receptors and inhibiting viral penetration or uncoating; inhibiting viral protein synthesis; or blocking late stages of virus assembly.
The type species of SIMPLEXVIRUS causing most forms of non-genital herpes simplex in humans. Primary infection occurs mainly in infants and young children and then the virus becomes latent in the dorsal root ganglion. It then is periodically reactivated throughout life causing mostly benign conditions.
The mechanism by which latent viruses, such as genetically transmitted tumor viruses (PROVIRUSES) or PROPHAGES of lysogenic bacteria, are induced to replicate and then released as infectious viruses. It may be effected by various endogenous and exogenous stimuli, including B-cell LIPOPOLYSACCHARIDES, glucocorticoid hormones, halogenated pyrimidines, IONIZING RADIATION, ultraviolet light, and superinfecting viruses.
A purine that is an isomer of ADENINE (6-aminopurine).
Herpes simplex, caused by type 1 virus, primarily spread by oral secretions and usually occurring as a concomitant of fever. It may also develop in the absence of fever or prior illness. It commonly involves the facial region, especially the lips and the nares. (Dorland, 27th ed.)
The number of new cases of a given disease during a given period in a specified population. It also is used for the rate at which new events occur in a defined population. It is differentiated from PREVALENCE, which refers to all cases, new or old, in the population at a given time.
A species of SIMPLEXVIRUS associated with genital infections (HERPES GENITALIS). It is transmitted by sexual intercourse and close personal contact.
A genus of the family HERPESVIRIDAE, subfamily ALPHAHERPESVIRINAE. Its species include those causing CHICKENPOX and HERPES ZOSTER in humans (HERPESVIRUS 3, HUMAN), as well as several animal viruses.
Diseases in which skin eruptions or rashes are a prominent manifestation. Classically, six such diseases were described with similar rashes; they were numbered in the order in which they were reported. Only the fourth (Duke's disease), fifth (ERYTHEMA INFECTIOSUM), and sixth (EXANTHEMA SUBITUM) numeric designations survive as occasional synonyms in current terminology.
The ability of lymphoid cells to mount a humoral or cellular immune response when challenged by antigen.
An acute (or rarely chronic) inflammatory process of the brain caused by SIMPLEXVIRUS infections which may be fatal. The majority of infections are caused by human herpesvirus 1 (HERPESVIRUS 1, HUMAN) and less often by human herpesvirus 2 (HERPESVIRUS 2, HUMAN). Clinical manifestations include FEVER; HEADACHE; SEIZURES; HALLUCINATIONS; behavioral alterations; APHASIA; hemiparesis; and COMA. Pathologically, the condition is marked by a hemorrhagic necrosis involving the medial and inferior TEMPORAL LOBE and orbital regions of the FRONTAL LOBE. (From Adams et al., Principles of Neurology, 6th ed, pp751-4)
Immunoglobulins produced in response to VIRAL ANTIGENS.
Skin diseases caused by bacteria, fungi, parasites, or viruses.
A human or animal whose immunologic mechanism is deficient because of an immunodeficiency disorder or other disease or as the result of the administration of immunosuppressive drugs or radiation.
Deoxyribonucleic acid that makes up the genetic material of viruses.
A branched-chain essential amino acid that has stimulant activity. It promotes muscle growth and tissue repair. It is a precursor in the penicillin biosynthetic pathway.
A CELL LINE derived from the kidney of the African green (vervet) monkey, (CERCOPITHECUS AETHIOPS) used primarily in virus replication studies and plaque assays.
A pyrimidine nucleoside formed in the body by the deamination of CYTARABINE.
Compounds capable of relieving pain without the loss of CONSCIOUSNESS.
Inflammation of the eyelids.
Studies used to test etiologic hypotheses in which inferences about an exposure to putative causal factors are derived from data relating to characteristics of persons under study or to events or experiences in their past. The essential feature is that some of the persons under study have the disease or outcome of interest and their characteristics are compared with those of unaffected persons.
Viral infections of the leptomeninges and subarachnoid space. TOGAVIRIDAE INFECTIONS; FLAVIVIRIDAE INFECTIONS; RUBELLA; BUNYAVIRIDAE INFECTIONS; ORBIVIRUS infections; PICORNAVIRIDAE INFECTIONS; ORTHOMYXOVIRIDAE INFECTIONS; RHABDOVIRIDAE INFECTIONS; ARENAVIRIDAE INFECTIONS; HERPESVIRIDAE INFECTIONS; ADENOVIRIDAE INFECTIONS; JC VIRUS infections; and RETROVIRIDAE INFECTIONS may cause this form of meningitis. Clinical manifestations include fever, headache, neck pain, vomiting, PHOTOPHOBIA, and signs of meningeal irritation. (From Joynt, Clinical Neurology, 1996, Ch26, pp1-3)
An enzyme that catalyzes the conversion of ATP and thymidine to ADP and thymidine 5'-phosphate. Deoxyuridine can also act as an acceptor and dGTP as a donor. (From Enzyme Nomenclature, 1992) EC 2.7.1.21.
Administration of vaccines to stimulate the host's immune response. This includes any preparation intended for active immunological prophylaxis.
Paralysis of one or more of the ocular muscles due to disorders of the eye muscles, neuromuscular junction, supporting soft tissue, tendons, or innervation to the muscles.
I'm sorry for any confusion, but "Taiwan" is not a medical term and does not have a medical definition. It is a country located in East Asia. If you have any questions related to healthcare or medical terms, I would be happy to help with those!
The ability of a pathogenic virus to lie dormant within a cell (latent infection). In eukaryotes, subsequent activation and viral replication is thought to be caused by extracellular stimulation of cellular transcription factors. Latency in bacteriophage is maintained by the expression of virally encoded repressors.
Visible accumulations of fluid within or beneath the epidermis.
A sensory branch of the trigeminal (5th cranial) nerve. The ophthalmic nerve carries general afferents from the superficial division of the face including the eyeball, conjunctiva, upper eyelid, upper nose, nasal mucosa, and scalp.
Diseases of the cornea.
Severe or complete loss of motor function on one side of the body. This condition is usually caused by BRAIN DISEASES that are localized to the cerebral hemisphere opposite to the side of weakness. Less frequently, BRAIN STEM lesions; cervical SPINAL CORD DISEASES; PERIPHERAL NERVOUS SYSTEM DISEASES; and other conditions may manifest as hemiplegia. The term hemiparesis (see PARESIS) refers to mild to moderate weakness involving one side of the body.

Varicella zoster virus infection associated with high-dose chemotherapy and autologous stem-cell rescue. (1/774)

A retrospective evaluation of 215 consecutive recipients of high-dose chemotherapy (HDC) and autologous stem cell rescue (ASCR) was conducted to ascertain the incidence, temporal course, and outcome of varicella zoster virus (VZV) infection. Herpes zoster was identified in 40 individuals at a median of 69 days following ASCR. Six of these cases occurred at a median of 33 days prior to ASCR but following the initiation of high doses of stem cell mobilization chemotherapy. Twenty-five percent of patients demonstrated cutaneous or systemic dissemination and 32.5% required medical intervention for post-herpetic neuralgia. All except two individuals received antiviral chemotherapy. One patient with active VZV infection died of multiorgan failure 39 days after ASCR. Multivariate analysis of risk factors disclosed the significance of prophylactic acyclovir use in Herpes simplex virus seropositive individuals in reducing the risk of VZV infection. Moreover, the use of busulfan, thiotepa and carboplatin as the conditioning chemotherapy regimen was associated with an increased risk of subsequent VZV infection. The incidence of VZV reactivation after HDC and ASCR is similar to that observed following bone marrow transplantation but has an earlier onset. This may be related to an earlier induction of immunosuppression by stem cell mobilization chemotherapy administered prior to ASCR. We demonstrated a marked reduction in the proliferative and synthetic capacities of peripheral blood mononuclear cells obtained prior to and following stem cell mobilizing chemotherapy. Moreover, greater than 80% of VZV infections occurred within 6 months following ASCR and late cases were seldom observed compared to allogeneic and autologous bone marrow transplantation. The role of antiviral chemoprophylaxis during the period of maximum immunocompromise needs to be studied further in the HDC-ASCR setting.  (+info)

Disseminated superficial actinic porokeratosis like drug eruption: a case report. (2/774)

We report a 54-year-old male patient who developed an unusual form of generalized drug eruption. He had pain and breathlessness on the left chest wall. He had history of taking several drugs at private clinics under a diagnosis of herpes zoster. Two weeks later he had a generalized skin eruption. Examination showed multiple variable sized, mild pruritic, erythematous macules and papules on the face and upper extremities. Skin lesions take the form of a clinically consistent with disseminated superficial actinic porokeratosis (DSAP). Methylprednisolone 16 mg, astemisole 10 mg, oxatomide 60 mg was prescribed. Topical corticosteroid cream was applied. Within two months, his eruption had cleared almost completely. The pathogenetic mechanisms of this case are unclear, but drug and UV light have been considered.  (+info)

Latent Varicella-zoster virus in human dorsal root ganglia. (3/774)

To understand further the molecular events underlying the process of Varicella-zoster virus (VZV) latency in human ganglionic tissues, in situ hybridisation (ISH) for VZV RNA and DNA, and PCR in situ amplification for VZV DNA were used in human dorsal root ganglia from 12 individuals (3 normal and 9 who had died with AIDS). The results showed that (a) two separate regions of the VZV genome, represented by genes 4 and 40, were detected in neurons in two normal and three AIDS ganglia, (b) evidence of transcription of VZV genes 4, 21, 29, and 63 was found in normal and AIDS cases, and (c) VZV DNA and RNA for the same gene (gene 29) was detected in neurons in serial tissue sections in three cases. Thus more than one region of the VZV genome is present in neurons during VZV ganglionic latency, and the presence of both a VZV gene and its corresponding RNA transcript can be shown to occur in the same localised region of DRG tissue.  (+info)

Prevalence of varicella-zoster virus DNA in dissociated human trigeminal ganglion neurons and nonneuronal cells. (4/774)

Previous analyses using in situ hybridization alone or together with PCR have yielded conflicting results regarding the cell type in which latent varicella-zoster virus (VZV) resides. We separated human trigeminal ganglia (TG) into neuronal and nonneuronal fractions, followed by primary and nested PCR to quantitate VZV DNA at the single cell level. Both TG from each of eight cadavers were dissociated and separated into neuronal and nonneuronal cell suspensions by differential filtration. Analysis of the neuron fraction (5,000 neurons per sample) revealed VZV DNA in 9 of 16 samples, with copy numbers ranging from 1 to 12, whereas only 2 of 16 nonneuronal cell samples were positive for VZV DNA, with 1 copy each. Further analysis of 10 samples of 100 neurons and the corresponding nonneuronal cell fractions from each TG of a single subject revealed VZV DNA in 3 of 10 samples of the left TG (range, 2 to 5 copies) and in 1 of 10 samples of the right TG (2 copies) but in none of the 20 nonneuronal cell fractions. These data indicate that latent VZV DNA is present primarily, if not exclusively, in neurons, at a frequency of two to five copies per latently infected neuron.  (+info)

Behavioural changes in the rat following infection with varicella-zoster virus. (5/774)

Following the establishment of a chronic varicella-zoster virus infection in the rat, behavioural allodynia and hyperalgesia were observed in the injected, but not the contralateral hind limb up to 33 days post-infection. This model may prove useful in investigating mechanisms involved in the establishment of post-herpetic neuralgia.  (+info)

Environmental chemical exposures and risk of herpes zoster. (6/774)

This study investigated whether residence in Aberdeen, North Carolina, the location of the Aberdeen pesticides dumps site (a national priority list Superfund site containing organochlorine pesticides, volatile organic compounds, and metals), is associated with immune suppression as indicated by a higher incidence of herpes zoster and recent occurrences of other common infectious diseases. Study participants included 1,642 residents, 18-64 years of age, who responded to a telephone survey concerning potential occupational and recreational exposures to pesticides and other chemicals, lifetime history of herpes zoster (shingles), and the recent occurrence of other common infectious diseases. Stratified and logistic regression analyses were used to compare the cumulative incidence of herpes zoster among Aberdeen residents and residents of nearby communities. There was little evidence of an overall increased risk of herpes zoster among Aberdeen residents during the period 1951-1994 [relative risk (RR), 1.3; 95% confidence interval (CI), 0.8-2.1]. However, an elevated risk of herpes zoster was noted consistently among Aberdeen residents of younger ages as compared to residents of the nearby communities. The RR was 2.0 (CI, 1.0-4.0) among those 18-40 years of age and was not affected by controlling for potential confounders. The RR of herpes zoster was also consistently elevated in all age groups for the period before 1985. No differences were noted between residents of Aberdeen and those of the nearby communities with respect to the recent occurrence of other common infectious diseases. These results support the plausibility of an association between exposure to the Aberdeen pesticides dumps site and immune suppression and the potential use of herpes zoster as a marker of immune suppression in studies of environmental chemical exposures.  (+info)

Zoster incidence in human immunodeficiency virus-infected hemophiliacs and homosexual men, 1984-1997. District of Columbia Gay Cohort Study. Multicenter Hemophilia Cohort Study. (7/774)

Zoster is an important clinical problem for human immunodeficiency virus type 1 (HIV)-infected patients. Risk factors for zoster and trends in incidence in HIV-infected hemophiliacs and homosexual men (n=1218) were examined. From 1984 to 1997, 174 zoster cases were identified (average yearly incidence, 2.5%). Prior zoster episodes were associated with increased risk for a subsequent episode (relative risk [RR], 4.30; 95% confidence interval [CI], 3.11-5.95). Among hemophiliacs, children and adolescents had the highest zoster risk, and zoster risk declined with age (RR, 0.80 per decade; 95% CI, 0.68-0.93). These findings suggest that HIV-infected persons do not produce or maintain adequate booster responses after varicella zoster virus exposure. Zoster risk was relatively constant when CD4 cell counts >200 cells/mm3 but increased steeply below this level. During the 14 years of follow-up, zoster incidence declined 9% per year. This trend occurred despite decreasing CD4 cell counts and was unexplained by zidovudine or acyclovir use.  (+info)

Spectrum of opportunistic infections and malignancies in patients with human immunodeficiency virus infection in South Korea. (8/774)

To determine the frequency and types of major opportunistic diseases in patients with HIV infection in South Korea, we reviewed the medical records of 173 HIV-infected patients. The patients were seen from 1985 to 1998 at a referral hospital for AIDS in South Korea. Most patients (85%) were male, and 107 (62%) were infected by heterosexual contacts. CD4+ lymphocyte counts at presentation were <200/microL in 27% of the patients. Tuberculosis was the most frequent opportunistic infection (25% of patients), followed by candidiasis (21%), herpes zoster (20%), Pneumocystis carinii pneumonia (10%), cytomegalovirus disease (9.8%). There were no cases of toxoplasmosis. Kaposi's sarcoma developed in 3 patients (1.7%), and non-Hodgkin's lymphoma, in 2 (1.2%). Eleven patients (6.4%) developed peripheral neuropathy, and 8 (4.6%) had HIV encephalopathy. Tuberculosis was the single most important HIV-related infection in South Korean patients.  (+info)

Herpes zoster, also known as shingles, is a viral infection that causes a painful rash. It's caused by the varicella-zoster virus, which also causes chickenpox. After you recover from chickenpox, the virus lies dormant in your nerve cells and can reactivate later in life as herpes zoster.

The hallmark symptom of herpes zoster is a unilateral, vesicular rash that occurs in a dermatomal distribution, which means it follows the path of a specific nerve. The rash usually affects one side of the body and can wrap around either the left or right side of your torso.

Before the rash appears, you may experience symptoms such as pain, tingling, or itching in the area where the rash will develop. Other possible symptoms include fever, headache, fatigue, and muscle weakness. The rash typically scabs over and heals within two to four weeks, but some people may continue to experience pain in the affected area for months or even years after the rash has healed. This is known as postherpetic neuralgia (PHN).

Herpes zoster is most common in older adults and people with weakened immune systems, although anyone who has had chickenpox can develop the condition. It's important to seek medical attention if you suspect you have herpes zoster, as early treatment with antiviral medications can help reduce the severity and duration of the rash and lower your risk of developing complications such as PHN.

Herpes Zoster Ophthalmicus (HZO) is a type of herpes zoster (shingles) infection that affects the ophthalmic division (V1) of the trigeminal nerve. It is caused by the varicella-zoster virus, which also causes chickenpox. After a person recovers from chickenpox, the virus remains inactive in the body and can reactivate later as shingles, often many years after the initial infection.

When the virus reactivates and affects the ophthalmic division of the trigeminal nerve, it can cause a painful rash on the forehead, nose, and around one eye. The rash may be accompanied by other symptoms such as headache, fever, and fatigue. In some cases, HZO can also affect the eye itself, causing inflammation, corneal ulcers, and vision loss if left untreated.

It is important to seek medical attention promptly if you suspect you have HZO, as early treatment with antiviral medications can help reduce the severity of symptoms and prevent complications.

The Herpes Zoster vaccine, also known as the shingles vaccine, is a preventive measure against the reactivation of the varicella-zoster virus (VZV) in individuals who have previously had chickenpox. The vaccine contains a live but weakened form of VZV that boosts the immune system's ability to recognize and fight off the virus, thereby reducing the risk of developing shingles and its complications. It is typically administered as a single dose for people aged 50 and older, or as a two-dose series for those aged 19 and older who have weakened immune systems.

Postherpetic neuralgia (PHN) is a type of neuralgia, which is defined as pain in the distribution of a nerve or nerves. Specifically, PHN is a neuropathic pain condition that develops after an individual has had herpes zoster, also known as shingles. Shingles is caused by the reactivation of the varicella-zoster virus, which lies dormant in the nervous system following chickenpox infection.

PHN is characterized by persistent burning pain, often accompanied by sensory abnormalities such as numbness, tingling, or itching, in the area of the body where shingles occurred. The pain can be severe and debilitating, significantly impacting a person's quality of life. PHN primarily affects older adults and individuals with weakened immune systems.

The exact cause of PHN is not fully understood, but it is believed to result from damage to the affected nerves and their surrounding tissues during the shingles infection. This damage can lead to altered nerve function and increased sensitivity to stimuli, resulting in chronic pain. Treatment for PHN typically involves a combination of medications, such as antidepressants, anticonvulsants, or opioids, as well as topical treatments, physical therapy, and lifestyle modifications to help manage the pain and improve quality of life.

Also known as Varicella-zoster virus (VZV), Herpesvirus 3, Human is a species-specific alphaherpesvirus that causes two distinct diseases: chickenpox (varicella) during primary infection and herpes zoster (shingles) upon reactivation of latent infection.

Chickenpox is typically a self-limiting disease characterized by a generalized, pruritic vesicular rash, fever, and malaise. After resolution of the primary infection, VZV remains latent in the sensory ganglia and can reactivate later in life to cause herpes zoster, which is characterized by a unilateral, dermatomal vesicular rash and pain.

Herpesvirus 3, Human is highly contagious and spreads through respiratory droplets or direct contact with the chickenpox rash. Vaccination is available to prevent primary infection and reduce the risk of complications associated with chickenpox and herpes zoster.

Chickenpox is a highly contagious viral infection caused by the varicella-zoster virus. It is characterized by an itchy, blister-like rash that typically covers the body and can also affect the mouth, eyes, and scalp. The rash progresses through various stages, from red bumps to fluid-filled blisters to scabs, before ultimately healing.

Chickenpox is usually a mild disease in children but can be more severe in adults, pregnant women, and individuals with weakened immune systems. Common symptoms include fever, fatigue, headache, and loss of appetite, which often precede the onset of the rash. The infection typically lasts about 1-2 weeks, and once a person has had chickenpox, they usually develop immunity to future infections.

A vaccine is available to prevent chickenpox, and it is routinely administered to children as part of their childhood vaccination schedule. In some cases, the vaccine may be recommended for adults who have not had chickenpox or been vaccinated previously.

Herpes Simplex is a viral infection caused by the Herpes Simplex Virus (HSV). There are two types of HSV: HSV-1 and HSV-2. Both types can cause sores or blisters on the skin or mucous membranes, but HSV-1 is typically associated with oral herpes (cold sores) and HSV-2 is usually linked to genital herpes. However, either type can infect any area of the body. The virus remains in the body for life and can reactivate periodically, causing recurrent outbreaks of lesions or blisters. It is transmitted through direct contact with infected skin or mucous membranes, such as during kissing or sexual activity.

The chickenpox vaccine, also known as varicella vaccine, is a preventive measure against the highly contagious viral infection caused by the varicella-zoster virus. The vaccine contains a live but weakened form of the virus, which stimulates the immune system to produce a response without causing the disease itself.

The chickenpox vaccine is typically given in two doses, with the first dose administered between 12 and 15 months of age and the second dose between 4 and 6 years of age. In some cases, the vaccine may be given to older children, adolescents, or adults who have not previously been vaccinated or who have never had chickenpox.

The chickenpox vaccine is highly effective at preventing severe cases of the disease and reducing the risk of complications such as bacterial infections, pneumonia, and encephalitis. It is also effective at preventing transmission of the virus to others.

Like any vaccine, the chickenpox vaccine can cause mild side effects such as soreness at the injection site, fever, or a mild rash. However, these side effects are generally mild and short-lived. Serious side effects are rare but may include allergic reactions or severe immune responses.

Overall, the chickenpox vaccine is a safe and effective way to prevent this common childhood disease and its potential complications.

Acyclovir is an antiviral medication used for the treatment of infections caused by herpes simplex viruses (HSV) including genital herpes, cold sores, and shingles (varicella-zoster virus). It works by interfering with the replication of the virus's DNA, thereby preventing the virus from multiplying further. Acyclovir is available in various forms such as oral tablets, capsules, creams, and intravenous solutions.

The medical definition of 'Acyclovir' is:

Acyclovir (brand name Zovirax) is a synthetic nucleoside analogue that functions as an antiviral agent, specifically against herpes simplex viruses (HSV) types 1 and 2, varicella-zoster virus (VZV), and Epstein-Barr virus (EBV). Acyclovir is converted to its active form, acyclovir triphosphate, by viral thymidine kinase. This activated form then inhibits viral DNA polymerase, preventing further replication of the virus's DNA.

Acyclovir has a relatively low toxicity profile and is generally well-tolerated, although side effects such as nausea, vomiting, diarrhea, and headache can occur. In rare cases, more serious side effects such as kidney damage, seizures, or neurological problems may occur. It is important to take acyclovir exactly as directed by a healthcare provider and to report any unusual symptoms promptly.

Herpes zoster oticus, also known as Ramsay Hunt syndrome type 2, is a viral infection that affects the facial nerve (cranial nerve VII). It is caused by the reactivation of the varicella-zoster virus, which is the same virus responsible for chickenpox. After an initial chickenpox infection, the virus can remain dormant in the body and later reactivate, causing herpes zoster oticus.

In this condition, the virus affects the geniculate ganglion of the facial nerve, leading to inflammation and damage to the nerve fibers. This results in various symptoms, including:

1. Painful rash around the ear, on the face, or in the mouth
2. Facial weakness or paralysis on one side of the face
3. Hearing loss, tinnitus (ringing in the ears), or vertigo (dizziness)
4. Loss of taste sensation on the anterior two-thirds of the tongue
5. Difficulty closing one eye, leading to dryness and irritation

Immediate medical attention is necessary for proper diagnosis and treatment, which typically involves antiviral medications and corticosteroids to reduce inflammation and speed up recovery. Early treatment can help minimize the risk of complications, such as permanent facial nerve damage or hearing loss.

Herpes genitalis is a sexually transmitted infection caused by the herpes simplex virus (HSV), specifically HSV-2, and occasionally HSV-1. It primarily affects the genital area, but can also involve the anal region, thighs, and buttocks. The infection presents as painful fluid-filled blisters or lesions that may be accompanied by symptoms such as itching, tingling, or burning sensations in the affected area. After the initial outbreak, the virus remains dormant in the body and can reactivate periodically, causing recurrent episodes of genital herpes. It's important to note that while there is no cure for herpes genitalis, antiviral medications can help manage symptoms and reduce transmission risks.

Encephalitis, Varicella Zoster is a type of encephalitis (inflammation of the brain) caused by the varicella-zoster virus, which also causes chickenpox and shingles. It typically occurs in individuals who have previously had chickenpox, and the virus remains dormant in the body and can reactivate later in life as shingles. In some cases, the virus can spread to the brain and cause encephalitis.

Symptoms of Varicella Zoster encephalitis may include fever, headache, confusion, seizures, and changes in consciousness. It is a serious condition that requires prompt medical attention and treatment with antiviral medications. Complications can include long-term neurological damage or even death.

It's important to note that not everyone who has shingles will develop encephalitis, but it is a potential complication of the infection. People who are at higher risk for developing Varicella Zoster encephalitis include those with weakened immune systems, such as people undergoing cancer treatment or those with HIV/AIDS.

Skin diseases of viral origin are conditions that affect the skin caused by viral infections. These infections can lead to various symptoms such as rashes, blisters, papules, and skin lesions. Some common examples of viral skin diseases include:

1. Herpes Simplex Virus (HSV) infection: This causes cold sores or genital herpes, which are characterized by small, painful blisters on the skin.
2. Varicella-zoster virus (VZV) infection: This causes chickenpox and shingles, which are characterized by itchy, fluid-filled blisters on the skin.
3. Human Papillomavirus (HPV) infection: This causes warts, which are small, rough growths on the skin.
4. Molluscum contagiosum: This is a viral infection that causes small, raised, and pearly white bumps on the skin.
5. Measles: This is a highly contagious viral disease characterized by fever, cough, runny nose, and a rash that spreads all over the body.
6. Rubella: Also known as German measles, this viral infection causes a red rash on the face and neck that spreads to the rest of the body.

Viral skin diseases can be spread through direct contact with an infected person or contaminated objects, such as towels or bedding. Some viral skin diseases can be prevented through vaccination, while others can be treated with antiviral medications or other therapies.

Zoster sine herpete (ZSH) is a rare and somewhat controversial clinical entity within the family of herpes zoster infections. It is characterized by the presence of dermatomal pain, or shingles, without the accompanying rash or vesicles typically associated with classic herpes zoster (shingles).

In ZSH, the varicella-zoster virus (VZV) reactivates from its dormant state in the sensory ganglia and travels along the affected nerve to the skin, causing pain. However, it does not produce the characteristic rash due to an unknown reason, which differentiates it from classic herpes zoster.

Diagnosis of ZSH can be challenging since the absence of a rash makes it difficult to confirm VZV reactivation through direct observation or laboratory tests. Diagnosis often relies on clinical judgment and response to antiviral therapy, as well as supportive findings from imaging studies, like MRI or PET scans, which may reveal inflammation in the affected dermatome.

The condition can be particularly distressing for patients, as they experience painful shingles symptoms without the rash that would typically signal the need for medical intervention. Early diagnosis and treatment with antiviral medications are crucial to help manage pain, reduce complications, and shorten the duration of the illness.

Simplexvirus is a genus of viruses in the family Herpesviridae, subfamily Alphaherpesvirinae. This genus contains two species: Human alphaherpesvirus 1 (also known as HSV-1 or herpes simplex virus type 1) and Human alphaherpesvirus 2 (also known as HSV-2 or herpes simplex virus type 2). These viruses are responsible for causing various medical conditions, most commonly oral and genital herpes. They are characterized by their ability to establish lifelong latency in the nervous system and reactivate periodically to cause recurrent symptoms.

Neuralgia is a type of pain that occurs along the pathway of a nerve, often caused by damage or irritation to the nerve. It is typically described as a sharp, stabbing, burning, or electric-shock like pain that can be severe and debilitating. Neuralgia can affect any nerve in the body, but it most commonly occurs in the facial area (trigeminal neuralgia) or in the nerves related to the spine (postherpetic neuralgia). The pain associated with neuralgia can be intermittent or constant and may be worsened by certain triggers such as touch, temperature changes, or movement. Treatment for neuralgia typically involves medications to manage pain, as well as other therapies such as nerve blocks, surgery, or lifestyle modifications.

Antiviral agents are a class of medications that are designed to treat infections caused by viruses. Unlike antibiotics, which target bacteria, antiviral agents interfere with the replication and infection mechanisms of viruses, either by inhibiting their ability to replicate or by modulating the host's immune response to the virus.

Antiviral agents are used to treat a variety of viral infections, including influenza, herpes simplex virus (HSV) infections, human immunodeficiency virus (HIV) infection, hepatitis B and C, and respiratory syncytial virus (RSV) infections.

These medications can be administered orally, intravenously, or topically, depending on the type of viral infection being treated. Some antiviral agents are also used for prophylaxis, or prevention, of certain viral infections.

It is important to note that antiviral agents are not effective against all types of viruses and may have significant side effects. Therefore, it is essential to consult with a healthcare professional before starting any antiviral therapy.

Medical Definition of "Herpesvirus 1, Human" (also known as Human Herpesvirus 1 or HHV-1):

Herpesvirus 1, Human is a type of herpesvirus that primarily causes infection in humans. It is also commonly referred to as human herpesvirus 1 (HHV-1) or oral herpes. This virus is highly contagious and can be transmitted through direct contact with infected saliva, skin, or mucous membranes.

After initial infection, the virus typically remains dormant in the body's nerve cells and may reactivate later, causing recurrent symptoms. The most common manifestation of HHV-1 infection is oral herpes, characterized by cold sores or fever blisters around the mouth and lips. In some cases, HHV-1 can also cause other conditions such as encephalitis (inflammation of the brain) and keratitis (inflammation of the eye's cornea).

There is no cure for HHV-1 infection, but antiviral medications can help manage symptoms and reduce the severity and frequency of recurrent outbreaks.

Viral activation, also known as viral reactivation or virus reactivation, refers to the process in which a latent or dormant virus becomes active and starts to replicate within a host cell. This can occur when the immune system is weakened or compromised, allowing the virus to evade the body's natural defenses and cause disease.

In some cases, viral activation can be triggered by certain environmental factors, such as stress, exposure to UV light, or infection with another virus. Once activated, the virus can cause symptoms similar to those seen during the initial infection, or it may lead to new symptoms depending on the specific virus and the host's immune response.

Examples of viruses that can remain dormant in the body and be reactivated include herpes simplex virus (HSV), varicella-zoster virus (VZV), cytomegalovirus (CMV), and Epstein-Barr virus (EBV). It is important to note that not all viruses can be reactivated, and some may remain dormant in the body indefinitely without causing any harm.

2-Aminopurine is a fluorescent purine analog, which means it is a compound that is similar in structure to the naturally occurring molecule called purines, which are building blocks of DNA and RNA. 2-Aminopurine is used in research to study the structure and function of nucleic acids (DNA and RNA) due to its fluorescent properties. It can be incorporated into oligonucleotides (short stretches of nucleic acids) to allow for the monitoring of interactions between nucleic acids, such as during DNA replication or transcription. The fluorescence of 2-Aminopurine changes upon excitation with light and can be used to detect structural changes in nucleic acids or to measure the distance between two fluorophores.

Herpes labialis, also known as cold sores or fever blisters, is a common viral infection caused by the herpes simplex virus type 1 (HSV-1). It typically affects the lips, mouth, and surrounding skin. The infection causes small, painful, fluid-filled blisters that can be accompanied by symptoms such as tingling, burning, or itching in the area before the blisters appear. After the blisters break, they leave behind painful ulcers that eventually crust over and heal within 2-3 weeks.

The virus is highly contagious and can spread through direct contact with infected saliva, skin lesions, or objects contaminated with the virus. Once a person becomes infected with HSV-1, the virus remains dormant in the nervous system and can reactivate periodically due to various triggers like stress, fatigue, illness, or sun exposure, leading to recurrent outbreaks of herpes labialis.

In epidemiology, the incidence of a disease is defined as the number of new cases of that disease within a specific population over a certain period of time. It is typically expressed as a rate, with the number of new cases in the numerator and the size of the population at risk in the denominator. Incidence provides information about the risk of developing a disease during a given time period and can be used to compare disease rates between different populations or to monitor trends in disease occurrence over time.

Medical Definition of "Herpesvirus 2, Human" (also known as Human Herpesvirus 2 or HHV-2):

Herpesvirus 2, Human is a double-stranded DNA virus that belongs to the Herpesviridae family. It is one of the eight herpesviruses known to infect humans. HHV-2 is the primary cause of genital herpes, a sexually transmitted infection (STI) that affects the mucosal surfaces and skin around the genitals, rectum, or mouth.

The virus is typically transmitted through sexual contact with an infected person, and it can also be spread from mother to child during childbirth if the mother has active genital lesions. After initial infection, HHV-2 establishes latency in the sacral ganglia (a collection of nerve cells at the base of the spine) and may reactivate periodically, leading to recurrent outbreaks of genital herpes.

During both primary and recurrent infections, HHV-2 can cause painful blisters or ulcers on the skin or mucous membranes, as well as flu-like symptoms such as fever, swollen lymph nodes, and body aches. While there is no cure for genital herpes, antiviral medications can help manage symptoms, reduce outbreak frequency, and lower the risk of transmission to sexual partners.

It's important to note that HHV-2 infection can sometimes be asymptomatic or cause mild symptoms that go unnoticed, making it difficult to determine the exact prevalence of the virus in the population. According to the World Health Organization (WHO), an estimated 491 million people worldwide aged 15 years and older have HSV-2 infection, with a higher prevalence in women than men.

Varicellovirus is a genus of viruses in the family Herpesviridae, subfamily Alphaherpesvirinae. This genus includes several human and animal viruses that are closely related to each other. The most well-known member of this genus is the Varicella-zoster virus (VZV), which causes two distinct diseases: chickenpox (varicella) and shingles (zoster).

The Varicellovirus genus includes the following species:

1. Human alphaherpesvirus 3 (Varicella-zoster virus)
2. Simian varicella virus
3. Bovine herpesvirus 1
4. Bovine herpesvirus 5
5. Pseudorabies virus
6. Equid herpesvirus 1
7. Equid herpesvirus 3
8. Equid herpesvirus 4
9. Equid herpesvirus 8
10. Equid herpesvirus 9
11. Cercopithecine herpesvirus 1 (Herpes B virus)
12. Cercopithecine herpesvirus 2
13. Suid herpesvirus 1 (Aujeszky's disease virus)
14. Canid herpesvirus 1
15. Felid herpesvirus 1

These viruses are characterized by their ability to establish latency in the nervous system of their hosts and reactivate later in life, causing recurrent disease. They typically have a broad host range and can infect multiple species within a family or genus.

An exanthem is a skin eruption or rash that often occurs as a symptom of various diseases, such as infectious illnesses. It can appear in different forms, including maculopapular (consisting of both macules and papules), vesicular (small fluid-filled blisters), petechial (small purple or red spots caused by bleeding under the skin), or erythematous (reddened). The rash can be localized to certain areas of the body or generalized, covering large parts or the entire body. Exanthems are usually accompanied by other symptoms related to the underlying disease, such as fever, cough, or muscle aches.

Immunocompetence is the condition of having a properly functioning immune system that can effectively respond to the presence of foreign substances, such as pathogens (like bacteria, viruses, and parasites) and other potentially harmful agents. It involves the ability of the immune system to recognize, attack, and eliminate these foreign substances while also maintaining tolerance to self-tissues and promoting tissue repair.

Immunocompetence is essential for overall health and wellbeing, as it helps protect the body from infections and diseases. Factors that can affect immunocompetence include age, genetics, stress, nutrition, sleep, and certain medical conditions or treatments (like chemotherapy or immunosuppressive drugs) that can weaken the immune system.

Herpes simplex encephalitis (HSE) is a severe and potentially life-thingening inflammation of the brain caused by the herpes simplex virus (HSV), most commonly HSV-1. It is a rare but serious condition that can cause significant neurological damage if left untreated.

The infection typically begins in the temporal or frontal lobes of the brain and can spread to other areas, causing symptoms such as headache, fever, seizures, confusion, memory loss, and personality changes. In severe cases, it can lead to coma or death.

Diagnosis of HSE is often made through a combination of clinical presentation, imaging studies (such as MRI), and laboratory tests, including polymerase chain reaction (PCR) analysis of cerebrospinal fluid (CSF) to detect the presence of the virus.

Treatment typically involves antiviral medications, such as acyclovir, which can help reduce the severity of the infection and prevent further neurological damage. In some cases, corticosteroids may also be used to reduce inflammation in the brain. Prompt treatment is critical for improving outcomes and reducing the risk of long-term neurological complications.

Antibodies, viral are proteins produced by the immune system in response to an infection with a virus. These antibodies are capable of recognizing and binding to specific antigens on the surface of the virus, which helps to neutralize or destroy the virus and prevent its replication. Once produced, these antibodies can provide immunity against future infections with the same virus.

Viral antibodies are typically composed of four polypeptide chains - two heavy chains and two light chains - that are held together by disulfide bonds. The binding site for the antigen is located at the tip of the Y-shaped structure, formed by the variable regions of the heavy and light chains.

There are five classes of antibodies in humans: IgA, IgD, IgE, IgG, and IgM. Each class has a different function and is distributed differently throughout the body. For example, IgG is the most common type of antibody found in the bloodstream and provides long-term immunity against viruses, while IgA is found primarily in mucous membranes and helps to protect against respiratory and gastrointestinal infections.

In addition to their role in the immune response, viral antibodies can also be used as diagnostic tools to detect the presence of a specific virus in a patient's blood or other bodily fluids.

Infectious skin diseases are conditions characterized by an infection or infestation of the skin caused by various microorganisms such as bacteria, viruses, fungi, or parasites. These organisms invade the skin, causing inflammation, redness, itching, pain, and other symptoms. Examples of infectious skin diseases include:

1. Bacterial infections: Cellulitis, impetigo, folliculitis, and MRSA (methicillin-resistant Staphylococcus aureus) infections are examples of bacterial skin infections.
2. Viral infections: Herpes simplex virus (HSV), varicella-zoster virus (VZV), human papillomavirus (HPV), and molluscum contagiosum are common viruses that can cause skin infections.
3. Fungal infections: Tinea pedis (athlete's foot), tinea corporis (ringworm), candidiasis (yeast infection), and pityriasis versicolor are examples of fungal skin infections.
4. Parasitic infestations: Scabies, lice, and bed bugs are examples of parasites that can cause infectious skin diseases.

Treatment for infectious skin diseases depends on the underlying cause and may include topical or oral antibiotics, antiviral medications, antifungal treatments, or insecticides to eliminate parasitic infestations. Proper hygiene, wound care, and avoiding contact with infected individuals can help prevent the spread of infectious skin diseases.

An immunocompromised host refers to an individual who has a weakened or impaired immune system, making them more susceptible to infections and decreased ability to fight off pathogens. This condition can be congenital (present at birth) or acquired (developed during one's lifetime).

Acquired immunocompromised states may result from various factors such as medical treatments (e.g., chemotherapy, radiation therapy, immunosuppressive drugs), infections (e.g., HIV/AIDS), chronic diseases (e.g., diabetes, malnutrition, liver disease), or aging.

Immunocompromised hosts are at a higher risk for developing severe and life-threatening infections due to their reduced immune response. Therefore, they require special consideration when it comes to prevention, diagnosis, and treatment of infectious diseases.

Viral DNA refers to the genetic material present in viruses that consist of DNA as their core component. Deoxyribonucleic acid (DNA) is one of the two types of nucleic acids that are responsible for storing and transmitting genetic information in living organisms. Viruses are infectious agents much smaller than bacteria that can only replicate inside the cells of other organisms, called hosts.

Viral DNA can be double-stranded (dsDNA) or single-stranded (ssDNA), depending on the type of virus. Double-stranded DNA viruses have a genome made up of two complementary strands of DNA, while single-stranded DNA viruses contain only one strand of DNA.

Examples of dsDNA viruses include Adenoviruses, Herpesviruses, and Poxviruses, while ssDNA viruses include Parvoviruses and Circoviruses. Viral DNA plays a crucial role in the replication cycle of the virus, encoding for various proteins necessary for its multiplication and survival within the host cell.

Valine is an essential amino acid, meaning it cannot be produced by the human body and must be obtained through diet. It is a hydrophobic amino acid, with a branched side chain, and is necessary for the growth, repair, and maintenance of tissues in the body. Valine is also important for muscle metabolism, and is often used by athletes as a supplement to enhance physical performance. Like other essential amino acids, valine must be obtained through foods such as meat, fish, dairy products, and legumes.

Vero cells are a line of cultured kidney epithelial cells that were isolated from an African green monkey (Cercopithecus aethiops) in the 1960s. They are named after the location where they were initially developed, the Vervet Research Institute in Japan.

Vero cells have the ability to divide indefinitely under certain laboratory conditions and are often used in scientific research, including virology, as a host cell for viruses to replicate. This allows researchers to study the characteristics of various viruses, such as their growth patterns and interactions with host cells. Vero cells are also used in the production of some vaccines, including those for rabies, polio, and Japanese encephalitis.

It is important to note that while Vero cells have been widely used in research and vaccine production, they can still have variations between different cell lines due to factors like passage number or culture conditions. Therefore, it's essential to specify the exact source and condition of Vero cells when reporting experimental results.

Arabinofuranosyluracil (AraU) is a nucleoside analogue, which means it is a synthetic compound similar to the building blocks of DNA and RNA. AraU is formed by combining the sugar arabinose with the nucleobase uracil. Nucleoside analogues like AraU are often used in cancer chemotherapy and antiviral therapy because they can interfere with the replication of DNA and RNA, disrupting the growth or replication of cancer cells or viruses.

In the context of medical research and treatment, AraU has been studied for its potential use as an anticancer and antiviral agent. However, it is not currently approved for use as a medication in humans. Like many nucleoside analogues, AraU can have toxic effects on normal cells as well as cancerous or virus-infected cells, which limits its usefulness as a therapeutic agent.

Analgesics are a class of drugs that are used to relieve pain. They work by blocking the transmission of pain signals in the nervous system, allowing individuals to manage their pain levels more effectively. There are many different types of analgesics available, including both prescription and over-the-counter options. Some common examples include acetaminophen (Tylenol), ibuprofen (Advil or Motrin), and opioids such as morphine or oxycodone.

The choice of analgesic will depend on several factors, including the type and severity of pain being experienced, any underlying medical conditions, potential drug interactions, and individual patient preferences. It is important to use these medications as directed by a healthcare provider, as misuse or overuse can lead to serious side effects and potential addiction.

In addition to their pain-relieving properties, some analgesics may also have additional benefits such as reducing inflammation (like in the case of nonsteroidal anti-inflammatory drugs or NSAIDs) or causing sedation (as with certain opioids). However, it is essential to weigh these potential benefits against the risks and side effects associated with each medication.

When used appropriately, analgesics can significantly improve a person's quality of life by helping them manage their pain effectively and allowing them to engage in daily activities more comfortably.

Blepharitis is a common inflammatory condition that affects the eyelids, specifically the eyelash follicles and the edges of the eyelids (called the "eyelid margins"). It can cause symptoms such as redness, swelling, itching, burning, and a crusty or flaky buildup on the lashes. Blepharitis can be caused by a variety of factors, including bacterial infection, skin disorders like seborrheic dermatitis or rosacea, and meibomian gland dysfunction. It is often a chronic condition that requires ongoing treatment to manage symptoms and prevent recurrence.

Retrospective studies, also known as retrospective research or looking back studies, are a type of observational study that examines data from the past to draw conclusions about possible causal relationships between risk factors and outcomes. In these studies, researchers analyze existing records, medical charts, or previously collected data to test a hypothesis or answer a specific research question.

Retrospective studies can be useful for generating hypotheses and identifying trends, but they have limitations compared to prospective studies, which follow participants forward in time from exposure to outcome. Retrospective studies are subject to biases such as recall bias, selection bias, and information bias, which can affect the validity of the results. Therefore, retrospective studies should be interpreted with caution and used primarily to generate hypotheses for further testing in prospective studies.

Viral meningitis is a form of meningitis, which is an inflammation of the membranes (meninges) surrounding the brain and spinal cord. It is caused by viral infections, such as enteroviruses, herpesviruses, and HIV. The infection enters the body through the respiratory system or the gastrointestinal tract and then spreads to the central nervous system.

Symptoms of viral meningitis may include fever, headache, stiff neck, photophobia (intolerance to light), and altered mental status. In some cases, patients may also experience vomiting, seizures, or skin rash. However, viral meningitis is generally less severe than bacterial meningitis and has a lower mortality rate.

Most cases of viral meningitis resolve on their own within 7-10 days, and treatment typically involves supportive care such as hydration, pain relief, and fever reduction. Antibiotics are not effective against viruses, so they are not used to treat viral meningitis. In some cases, antiviral medications may be prescribed for certain types of viral meningitis, such as herpes simplex virus (HSV) meningitis.

Preventive measures include practicing good hygiene, such as washing hands frequently and avoiding close contact with people who are sick. There is also a vaccine available to protect against enterovirus D68, which can cause viral meningitis in some cases.

Thymidine kinase (TK) is an enzyme that plays a crucial role in the synthesis of thymidine triphosphate (dTMP), a nucleotide required for DNA replication and repair. It catalyzes the phosphorylation of thymidine to thymidine monophosphate (dTMP) by transferring a phosphate group from adenosine triphosphate (ATP).

There are two major isoforms of thymidine kinase in humans: TK1 and TK2. TK1 is primarily found in the cytoplasm of proliferating cells, such as those involved in the cell cycle, while TK2 is located mainly in the mitochondria and is responsible for maintaining the dNTP pool required for mtDNA replication and repair.

Thymidine kinase activity has been used as a marker for cell proliferation, particularly in cancer cells, which often exhibit elevated levels of TK1 due to their high turnover rates. Additionally, measuring TK1 levels can help monitor the effectiveness of certain anticancer therapies that target DNA replication.

Vaccination is a simple, safe, and effective way to protect people against harmful diseases, before they come into contact with them. It uses your body's natural defenses to build protection to specific infections and makes your immune system stronger.

A vaccination usually contains a small, harmless piece of a virus or bacteria (or toxins produced by these germs) that has been made inactive or weakened so it won't cause the disease itself. This piece of the germ is known as an antigen. When the vaccine is introduced into the body, the immune system recognizes the antigen as foreign and produces antibodies to fight it.

If a person then comes into contact with the actual disease-causing germ, their immune system will recognize it and immediately produce antibodies to destroy it. The person is therefore protected against that disease. This is known as active immunity.

Vaccinations are important for both individual and public health. They prevent the spread of contagious diseases and protect vulnerable members of the population, such as young children, the elderly, and people with weakened immune systems who cannot be vaccinated or for whom vaccination is not effective.

Ophthalmoplegia is a medical term that refers to the paralysis or weakness of the eye muscles, which can result in double vision (diplopia) or difficulty moving the eyes. It can be caused by various conditions, including nerve damage, muscle disorders, or neurological diseases such as myasthenia gravis or multiple sclerosis. Ophthalmoplegia can affect one or more eye muscles and can be partial or complete. Depending on the underlying cause, ophthalmoplegia may be treatable with medications, surgery, or other interventions.

I'm sorry for any confusion, but "Taiwan" is not a medical term or concept. It is the name of an island nation located in East Asia. The official name of the country is the Republic of China (ROC). If you have any medical questions or inquiries, I would be happy to help answer those for you!

Virus latency, also known as viral latency, refers to a state of infection in which a virus remains dormant or inactive within a host cell for a period of time. During this phase, the virus does not replicate or cause any noticeable symptoms. However, under certain conditions such as stress, illness, or a weakened immune system, the virus can become reactivated and begin to produce new viruses, potentially leading to disease.

One well-known example of a virus that exhibits latency is the varicella-zoster virus (VZV), which causes chickenpox in children. After a person recovers from chickenpox, the virus remains dormant in the nervous system for years or even decades. In some cases, the virus can reactivate later in life, causing shingles, a painful rash that typically occurs on one side of the body.

Virus latency is an important concept in virology and infectious disease research, as it has implications for understanding the persistence of viral infections, developing treatments and vaccines, and predicting the risk of disease recurrence.

A blister is a small fluid-filled bubble that forms on the skin due to friction, burns, or contact with certain chemicals or irritants. Blisters are typically filled with a clear fluid called serum, which is a component of blood. They can also be filled with blood (known as blood blisters) if the blister is caused by a more severe injury.

Blisters act as a natural protective barrier for the underlying skin and tissues, preventing infection and promoting healing. It's generally recommended to leave blisters intact and avoid breaking them, as doing so can increase the risk of infection and delay healing. If a blister is particularly large or painful, medical attention may be necessary to prevent complications.

The ophthalmic nerve, also known as the first cranial nerve or CN I, is a sensory nerve that primarily transmits information about vision, including light intensity and color, and sensation in the eye and surrounding areas. It is responsible for the sensory innervation of the upper eyelid, conjunctiva, cornea, iris, ciliary body, and nasal cavity. The ophthalmic nerve has three major branches: the lacrimal nerve, frontal nerve, and nasociliary nerve. Damage to this nerve can result in various visual disturbances and loss of sensation in the affected areas.

Corneal diseases are a group of disorders that affect the cornea, which is the clear, dome-shaped surface at the front of the eye. The cornea plays an important role in focusing vision, and any damage or disease can cause significant visual impairment or loss. Some common types of corneal diseases include:

1. Keratoconus: A progressive disorder in which the cornea thins and bulges outward into a cone shape, causing distorted vision.
2. Fuchs' dystrophy: A genetic disorder that affects the inner layer of the cornea called the endothelium, leading to swelling, cloudiness, and decreased vision.
3. Dry eye syndrome: A condition in which the eyes do not produce enough tears or the tears evaporate too quickly, causing discomfort, redness, and blurred vision.
4. Corneal ulcers: Open sores on the cornea that can be caused by infection, trauma, or other factors.
5. Herpes simplex keratitis: A viral infection of the cornea that can cause recurrent episodes of inflammation, scarring, and vision loss.
6. Corneal dystrophies: Inherited disorders that affect the structure and clarity of the cornea, leading to visual impairment or blindness.
7. Bullous keratopathy: A condition in which the endothelium fails to pump fluid out of the cornea, causing it to swell and form blisters.
8. Corneal trauma: Injury to the cornea caused by foreign objects, chemicals, or other factors that can lead to scarring, infection, and vision loss.

Treatment for corneal diseases varies depending on the specific condition and severity of the disease. Options may include eyedrops, medications, laser surgery, corneal transplantation, or other treatments.

Hemiplegia is a medical term that refers to paralysis affecting one side of the body. It is typically caused by damage to the motor center of the brain, such as from a stroke, head injury, or brain tumor. The symptoms can vary in severity but often include muscle weakness, stiffness, and difficulty with coordination and balance on the affected side. In severe cases, the individual may be unable to move or feel anything on that side of the body. Hemiplegia can also affect speech, vision, and other functions controlled by the damaged area of the brain. Rehabilitation therapy is often recommended to help individuals with hemiplegia regain as much function as possible.

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GAUTHIER, A.; BREUER, J.; CARRINGTON, D.; MARTIN, M.; RÉMY, V. (2008-05-09). "Epidemiology and cost of herpes zoster and post- ... She has primarily investigated the genetic association of Varicella zoster virus, Herpes simplex virus and human parainfluenza ... "Recommendations for the Management of Herpes Zoster". Clinical Infectious Diseases. 44 (Supplement_1): S1-S26. doi:10.1086/ ... For almost three decades it was unclear how the Varicella zoster virus retained its dormancy. Breuer was the first to identify ...
"Herpes Zoster Oticus (Ramsay Hunt Syndrome) information". patient.info. Retrieved 2022-06-11. Pearce, J.M.S. (2007). "Some ...
2007). "Recommendations for the management of herpes zoster". Clin. Infect. Dis. 44 (Suppl 1): S1-26. doi:10.1086/510206. PMID ...
GN may also develop following herpes zoster oticus (Ramsay Hunt syndrome), where cold sores occur on the ear drum or ear. This ... There is a common association with herpes zoster. Diagnostic criteria: A. Pain paroxysms of intermittent occurrence, lasting ...
James SF, Chahine EB, Sucher AJ, Hanna C (July 2018). "Shingrix: The New Adjuvanted Recombinant Herpes Zoster Vaccine". The ... October 2018). "Efficacy, effectiveness, and safety of herpes zoster vaccines in adults aged 50 and older: systematic review ... Herpes zoster) and Nuvaxovid (Coronavirus disease 2019). After injection, antigens trigger the production of antigen-specific ... SHINGRIX is a licensed recombinant subunit vaccine for protection against Herpes Zoster, whose risk of developing increases ...
Göbel H, Stadler T (1997). "[Treatment of post-herpes zoster pain with tramadol. Results of an open pilot study versus ...
Nagane, Y; Utsugisawa, K; Yonezawa, H; Tohgi, H (2001). "A case with trigeminal herpes zoster manifesting a long lesion of the ... Preherpetic neuralgia is a form of nerve pain (neuralgia) specifically associated with a Shingles (herpes zoster) viral ... Saguil, A; Kane, S; Mercado, M; Lauters, R (2017). "Herpes Zoster and Postherpetic Neuralgia: Prevention and Management". ... 23 (12): 92-3. (Herpes simplex virus-associated diseases, Diseases and disorders). ...
Herpes zoster virus can attack the ciliary ganglion. Trauma to the orbit can damage the short ciliary nerves. Anything that ...
2007). "Recommendations for the management of herpes zoster". Clin. Infect. Dis. 44 (Suppl 1): S1-26. doi:10.1086/510206. PMID ...
Herpes zoster (shingles) may also cause posterior hip pain. Clinical tests are adapted to identify the source of pain as intra- ...
"Herpes Group (Cytomegalovirus, Herpes simplex, Varicella/Zoster, Epstein-Barr)". Retrieved 2009-01-02. "Neuropathology blog: ... There are two types of intranuclear Cowdry bodies: Type A (as seen in herpes simplex, VZV and measles ) Type B (as seen in ... Varicella-zoster virus, and Cytomegalovirus. They are named after Edmund Cowdry. ... are eosinophilic or basophilic nuclear inclusions composed of nucleic acid and protein seen in cells infected with Herpes ...
Hales CM, Harpaz R, Ortega-Sanchez I, Bialek SR (August 2014). "Update on recommendations for use of herpes zoster vaccine". ... Lastly, the live-attenuated zoster vaccine should be administered once after the age 60, but is not recommended in people on a ...
Foreign body: commonly include insects or small objects like beads Herpes zoster: varicella zoster virus can reactivate in an ... Albrecht, Mary (August 2016). "Clinical manifestations of varicella-zoster virus infection: Herpes zoster". www.uptodate.com. ...
The most common causes of loss of corneal sensitivity are viral infections (herpes simplex and herpes zoster ophthalmicus), ... T. J. Liesegang, Corneal complications from herpes zoster ophthalmicus. Ophthalmology 92 (1985) 316-24. S. Bonini, P. Rama, D. ... special attention should be paid to any herpes virus infections and possible surgeries on the cornea, trauma, abuse of ... of cases of keratitis due to varicella zoster virus. The diagnosis, and particularly the treatment of neurotrophic keratitis ...
Shingles is a painful rash that usually develops on one side of the body, often the face or torso. The rash forms blisters that typically scab over in 7 to 10 days and clears up within 2 to 4 weeks. Learn more about the Shingle vaccine.
... herpes zoster), which is a painful rash, often on one side of the body. It is caused by the same virus that causes chickenpox. ... Shingles (herpes zoster) is an infection that causes a painful rash. It is caused by the varicella-zoster virus (VZV). This is ... Herpes Zoster Oticus (National Institute of Neurological Disorders and Stroke) * Postherpetic Neuralgia (Mayo Foundation for ... ClinicalTrials.gov: Herpes Zoster (National Institutes of Health) * ClinicalTrials.gov: Neuralgia, Postherpetic (National ...
Herpes zoster ophthalmicus (HZO), also known as ophthalmic zoster, is shingles involving the eye or the surrounding area. ... Herpes Zoster Ophthalmicus". www.aao.org. Archived from the original on 15 August 2020. Retrieved 21 December 2019. "Herpes ... The herpes zoster vaccine is recommended for prevention in those over the age of 50. HZO is the second most common ... Shaikh S, Ta CN (November 2002). "Evaluation and management of herpes zoster ophthalmicus". American Family Physician. 66 (9): ...
Herpes zoster is an infection that results when varicella-zoster virus reactivates from the dorsal root ganglia. Proper ... Etiology of Herpes Zoster. Herpes zoster (shingles) is caused by VZV infection. VZV is an enveloped, double-stranded DNA virus ... Herpes zoster oticus (also known as Ramsay Hunt syndrome, geniculate neuralgia, or herpes zoster auricularis) is caused by VZV ... Herpes zoster ophthalmicus (HZO), a potentially devastating form of acute herpes zoster, results from the reactivation of VZV ...
Posts about Herpes Zoster written by David L. Hoffmann BSc Hons MNIMH ... Shingles, or herpes zoster, is a viral infection of sensory nerve cells caused by the same virus (Varicella zoster) that causes ...
2. herpes zoster, herpes zoster virus, herpes, herpes virus. usage: a herpes virus that causes shingles. WordNet 3.0 Copyright ... 1. herpes zoster, zoster, shingles, herpes. usage: eruptions along a nerve path often accompanied by severe neuralgia. ...
Herpes zoster, also called shingles, causes a rash with blisters on the body and is very painful. ... Herpes Zoster. Say: HUR-pees ZAHS-tur. Also called shingles, this is caused by the same virus that causes chickenpox. If ... Anyone whos had chickenpox can get herpes zoster later (but this usually wont happen until someone is an older adult). ...
Administration of the live attenuated herpes zoster vaccine is not associated with an increased risk for shingles shortly after ... Herpes zoster vaccine recommendations questioned in patients on biologics. *Download PDF Copy ... Administration of the live attenuated herpes zoster (HZ) vaccine is not associated with an increased risk for shingles shortly ... Herpes Zoster, Immune System, Inflammatory Bowel Disease, Medical Technical, Medicare, Necrosis, Nephrology, Oncology, ...
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... is not uncommon in patients with herpes zoster involving lumbosacral dermatomes. Treatment with intermittent catheterization ( ... Herpes zoster-associated voiding dysfunction: a retrospective study and literature review Arch Phys Med Rehabil. 2002 Nov;83(11 ... Participants: Four hundred twenty-three patients (mean age, 55.5y) admitted with the diagnosis of herpes zoster from 1988 to ... Objectives: (1) To describe the demographic features of patients with voiding dysfunction associated with herpes zoster; (2) to ...
Herpes Zoster Vaccine. (Shingles Vaccine). by Cynthia M. Johnson, MA. What Is Herpes Zoster?. Herpes zoster is a viral ... What Is the Herpes Zoster Vaccine?. This vaccine is made of inactivated varicella zoster virus. It is given as a shot under the ... Herpes zoster. EBSCO DynaMed website. Available at: https://www.dynamed.com/condition/herpes-zoster. Accessed July 8, 2021. ... Shingles (herpes zoster). Centers for Disease Control and Prevention website. Available at: https://www.cdc.gov/shingles/about/ ...
Herpes zoster, Shingles, VZV reactivaton. Authoritative facts from DermNet New Zealand. ... What is herpes zoster?. Herpes zoster is a localised, blistering and painful rash caused by reactivation of varicella-zoster ... Who gets herpes zoster?. Anyone who has had varicella (chickenpox) may subsequently develop herpes zoster. Zoster can occur in ... Zoster (herpes zoster/shingles) - Immunisation Handbook 2017, Ministry of Health, NZ. *Shingles (Herpes Zoster) Vaccination - ...
If herpes zoster occurs in a child, then one must suspect a poor immunity and workup the child for the same. Among various ... Herpes zoster is caused due to reactivation of varicella virus. It is commonly seen in geriatic population or patients with ... Herpes zoster being a virus depends on T cell mediated immunity and all congenital T-cell mediated immunodeficiencies present ... Thus, always rule out an underlying immune disorder in a child if there is herpes zoster especially if it is multi-dermatomal. ...
Shingles, also called herpes zoster, is caused by the varicella-zoster virus. This is the same virus that causes chickenpox. ...
... in HIV-Seropositive Patients. Herpes zoster in HIV-seropositive patients is usually similar to that seen in ... Herpes Zoster Ophthalmicus. Patients with herpes zoster involving the first division of the trigeminal nerve typically present ... Figure 3.Acute Herpes Zoster Involving the First Division of the Trigeminal Nerve (Herpes Zoster Ophthalmicus). Photograph ... Can Herpes Zoster Be Prevented?. The varicella-zoster virus Oka strain vaccine is currently recommended by the Advisory ...
... August 1, 2018. Eric Roath, ... Recommendations of the Advisory Committee on Immunization Practices for use of herpes zoster vaccines. MMWR Morb Mortal Wkly ... A Pharmacists Guide to Identifying the Signs and Symptoms of Herpes Zoster ... pharmacists should ask whether they have considered getting vaccinated for herpes zoster. As with all vaccines, education ...
Instead of looking to the origin of the herpes zoster problem: both the (paradoxical) infectivity and the lack of efficacy of ... A new systematic review published in PLoS titled, "Herpes Zoster Risk Reduction through Exposure to Chickenpox Patients: A ... And already there is indication that the shingles vaccine causes ... you guessed it ... reactivation of the herpes zoster virus ... A Pox on the CDCs Vaccination Agenda: The Rise of Herpes Zoster (Shingles). ...
Dermatology medical coding companies can help practices report treatments for herpes zoster using accurate codes, and ensure ... Also known as shingles, herpes zoster is a viral infection caused by the varicella-zoster virus (VZV). VZV is the same virus ... Are Herpes Zoster and Varicella the Same? Even though shingles and varicella (chickenpox) are caused by the same virus, they ... Medical Codes to Report Herpes Zoster or Shingles. by Natalie Tornese , Last updated Jul 5, 2023 , Published on Aug 5, 2021 , ...
There are two herpes zoster vaccines licensed in the United States: live attenuated zoster vaccine (abbreviation: ZVL; trade ... Efficacy of the Herpes Zoster Subunit Vaccine in Adults 70 Years of Age or Older. New England Journal of Medicine 2016;375(11): ... Herpes zoster, also known as shingles, occurs after reactivation of latent VZV and is associated with aging, immunosuppression ... Efficacy of RZV (Shingrix®) against herpes zoster was estimated to be 96.6% for those aged 50-59, 97.4% for those aged 60-69, ...
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Varicella Zoster NAAT DEPARTMENT VIRO TESTS V23 DESCRIPTION For detection and differentiation of HSV-1, HSV-2, and VZV from ... Herpes Simplex & Varicella Zoster NAAT TEST NAME. Herpes Simplex & Varicella Zoster NAAT. ...
Information about the SNOMED CT code 186532003 representing Herpes zoster with unspecified complication. ... Herpes zoster 4740000. Herpes zoster with unspecified complication 186532003 removed: 2010-01-31. ancestors. sorted most to ... Herpes zoster with unspecified complication 186532003. SNOMED CT code. SNOMED code. 186532003. ... herpes-zoster-with-unspecified-complication.html. Copyright © 2000-2023 InnoviHealth Systems Inc - CPT® copyright American ...
Rare 1910 MEDICAL SKIN DISEASE STEREOVIEW CARD-HERPES - ZOSTER ... Rare 1910 MEDICAL SKIN DISEASE STEREOVIEW CARD-HERPES - ZOSTER ... Rare 1910 MEDICAL SKIN DISEASE STEREOVIEW CARD-HERPES - ZOSTER For Sale When you click on links to various merchants on this ...
Prevention of Herpes Zoster: A Focus on the Effectiveness and Safety of Herpes Zoster Vaccines. ... Two vaccines are marketed to prevent herpes zoster: the live zoster vaccine and the non-live, recombinant zoster vaccine. The ... or it can reactivate later in life and cause herpes zoster or shingles. Herpes zoster mainly occurs in older adults, causing ... have been seen with both vaccine types and include disseminated herpes zoster with the live zoster vaccine and Guillain-Barré ...
... a non-live vaccine designed to protect against herpes zoster. Although herpes zoster has been described as a reaction to ... Herpes zoster is caused by reactivation of the latent varicella zoster virus and often occurs in immunocompromised individuals ... to our knowledge this is the first report of herpes zoster triggered by a varicella zoster vaccine. ... We describe a rare case of an immunocompetent patient with herpes zoster triggered by Shingrix, ...
Researched and scanned health information on herpes zoster, shingles and related topics. ... The Herpes Zoster/Shingles Library Research Packet is provided as a service and consists of approximately 279 pages of scanned ... Herpes Zoster (Shingles) Health Research Digital Download: ... Herpes Zoster / Shingles - Info Packet (Download) quantity. Add ...
Disseminated herpes zoster with acute encephalitis in an immunocompetent elderly man ...
Shingles, more scientifically known as herpes zoster, is an insidious viral infection rooted in the chickenpox virus. You might ... 5. https://ada.com/conditions/herpes-zoster-ophthalmicus/. 6. https://www.drugtopics.com/view/enteric-zoster-hidden-shingles- ... recall the itchy inconvenience of chickenpox from childhood; however, the virus (Varicella-Zoster) doesnt simply disappear ...
Synonyms (terms occurring on more labels are shown first): herpes zoster, shingles, zoster, herpes zoster infection More ... Herpes zoster. Definition: An acute infectious, usually self-limited, disease believed to represent activation of latent ... varicella-zoster virus (HERPESVIRUS 3, HUMAN) in those who have been rendered partially immune after a previous attack of ...

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