Seasonal Affective Disorder
A syndrome characterized by depressions that recur annually at the same time each year, usually during the winter months. Other symptoms include anxiety, irritability, decreased energy, increased appetite (carbohydrate cravings), increased duration of sleep, and weight gain. SAD (seasonal affective disorder) can be treated by daily exposure to bright artificial lights (PHOTOTHERAPY), during the season of recurrence.
Phototherapy
Color Therapy
Melatonin
A biogenic amine that is found in animals and plants. In mammals, melatonin is produced by the PINEAL GLAND. Its secretion increases in darkness and decreases during exposure to light. Melatonin is implicated in the regulation of SLEEP, mood, and REPRODUCTION. Melatonin is also an effective antioxidant.
Seasons
Melatonin sensitivity to dim white light in affective disorders. (1/73)
Both dim and bright light has been shown to suppress the nocturnal secretion of the pineal hormone melatonin. Early reports suggests that an abnormal response to light occurs in patients with bipolar affective disorder, where as patients with major depressive disorder respond similarly to controls. It has been suggested that this abnormal sensitivity of the melatonin response to light could be a trait marker of bipolar affective disorder. However reports lack consistency. Hence, we investigated the melatonin suppression by dim light (200 lux) in patients with bipolar affective disorder, seasonal affective disorder and major depressive disorder. Results suggest that a supersensitive melatonin suppression to light in bipolar affective disorder (p < .005), and seasonal affective disorder (p < .05), whereas patients with major depressive disorder display similar suppression to controls. The supersensitivity may be a mechanism where by phase-delayed rhythms, are resynchronised to a new circadian position. Conversely, an abnormality may exist in the pathway from the retina to the suprachiamatic nucleus. (+info)Influence of sleep-wake and circadian rhythm disturbances in psychiatric disorders. (2/73)
Recent evidence shows that the temporal alignment between the sleep-wake cycle and the circadian pacemaker affects self-assessment of mood in healthy subjects. Despite the differences in affective state between healthy subjects and patients with psychiatric disorders, these results have implications for analyzing diurnal variation of mood in unipolar and bipolar affective disorders and sleep disturbances in other major psychiatric conditions such as chronic schizophrenia. In a good proportion of patients with depression, mood often improves over the course of the day; an extension of waking often has an antidepressant effect. Sleep deprivation has been described as a treatment for depression for more than 30 years, and approximately 50% to 60% of patients with depression respond to this approach, especially those patients who report that their mood improves over the course of the day. The mechanisms by which sleep deprivation exerts its antidepressant effects are still controversial, but a reduction in rapid eye movement sleep (REM sleep), sleep pressure and slow-wave sleep (SWS), or a circadian phase disturbance, have been proposed. Although several studies support each of these hypotheses, none is sufficient to explain all observations reported to date. Unfortunately, the disturbed sleep-wake cycle or behavioural activities of depressed patients often explain several of the abnormalities reported in the diurnal rhythms of these patients. Thus, protocols that specifically manipulate the sleep-wake cycle to unmask the expression of the endogenous circadian pacemaker are greatly needed. In chronic schizophrenia, significant disturbances in sleep continuity, REM sleep, and SWS have been consistently reported. These disturbances are different from those observed in depression, especially with regard to REM sleep. Circadian phase abnormalities in schizophrenic patients have also been reported. Future research is expected to clarify the nature of these abnormalities. (+info)Pathophysiology of seasonal affective disorder: a review. (3/73)
The study of the pathophysiology of seasonal affective disorder (SAD, also known as winter depression) has historically been intimately linked to investigations into the mechanisms of action of light therapy. This paper reviews the studies on the pathophysiology of SAD with emphasis on circadian, neurotransmitter, and genetic hypotheses. There is substantial evidence for circadian phase shift and serotonergic hypotheses, but conflicting results may indicate that SAD is a biologically heterogeneous condition. Recent progress in defining the molecular mechanisms of the human circadian clock and retinal phototransduction of light will provide important new directions for future studies of the etiology and pathophysiology of SAD. (+info)Light therapy for seasonal affective disorder in primary care: randomised controlled trial. (4/73)
BACKGROUND: Studies of light therapy have not been conducted previously in primary care. AIMS: To evaluate light therapy in primary care. METHOD: Fifty-seven participants with seasonal affective disorder were randomly allocated to 4 weeks of bright white or dim red light. Baseline expectations for treatment were assessed. Outcome was assessed with the Structured Interview Guide for the Hamilton Depression Scale, Seasonal Affective Disorder Version. RESULTS: Both groups showed decreases in symptom scores of more than 40%. There were no differences in proportions of responders in either group, regardless of the remission criteria applied, with around 60% (74% white light, 57% red light) meeting broad criteria for response and 31% (30% white light, 33% red light) meeting strict criteria. There were no differences in treatment expectations. CONCLUSIONS: Primary care patients with seasonal affective disorder improve after light therapy, but bright white light is not associated with greater improvements. (+info)Variability in the 5-HT(2A) receptor gene is associated with seasonal pattern in major depression. (5/73)
The 102-T/C polymorphism of the 5-HT(2A) receptor gene was analysed in 159 patients with major depression and 164 unrelated and healthy controls using a case-control design. Allele and genotype frequencies did not differ between cases and controls. No differences according to sex, age of onset, melancholia, suicidal behaviour or family history of psychiatric illness were found. However, genotype distributions significantly differed between patients with seasonal pattern in their episodes (MDS) and patients with no seasonal pattern (N-MDS) (chi(2) = 10.63; P = 0.004). A seasonal pattern was 7.57 times more frequent in 102C-allele carriers than in 102T homozygous (95.1% of patients MDS carried 102C-allele vs 72% of patients N-MDS (chi(2) = 9.45, df=1, P = 0.002; OR = 7.57 (95% CI: 1.65--48.08)). These results suggest that variation in the 5-HT2A receptor gene may play a role in the development of major depression with seasonal pattern and support the existence of a genetic and etiological heterogeneity underlying the diagnosis of major depression. (+info)Seasonal affective disorder: prevalence, detection and current treatment in North Wales. (6/73)
BACKGROUND: There is a paucity of information concerning the prevalence and detection of seasonal affective disorder (SAD) in UK populations. AIMS: To determine the prevalence, detection and current treatment of SAD within a general population sample. METHOD: The study was conducted in conjunction with the Outcomes of Depression International Network (ODIN) project, a large European study of depression. At the North Wales arm of the project, 1999 adults were randomly selected from a health authority database and screened by post for SAD with the Seasonal Patterns Assessment Questionnaire (SPAQ). Those scoring above cut-off were offered diagnostic interview, after which diagnosis of SAD according to DSM-IV criteria could be made. RESULTS: The prevalence rate of SAD was calculated to be 2.4% (95% CII.4-1.3). The majority of identified cases had not previously received a diagnosis of SAD from their general practitioner, although over half had been diagnosed with other forms of depression and had been prescribed antidepressant medication. CONCLUSIONS: Although SAD was found to be common in this general population sample it appeared to be largely underdiagnosed and/or misdiagnosed. (+info)Early response to light therapy partially predicts long-term antidepressant effects in patients with seasonal affective disorder. (7/73)
OBJECTIVE: To determine if the antidepressant effect of 1 hour of light therapy is predictive of the response after 1 and 2 weeks of treatment in patients with seasonal affective disorder (SAD). PATIENTS: Twelve patients with SAD. SETTING: National Institutes of Health Clinical Center, Bethesda, Md. INTERVENTIONS: Light therapy for 2 weeks. OUTCOME MEASURES: Scores on the Seasonal Affective Disorder Version of the Hamilton Depression Rating Scale (SIGH-SAD) on 4 occasions (before and after 1 hour of light therapy and after 1 and 2 weeks of therapy) in the winter when the patients were depressed. Change on typical and atypical depressive scores at these time points were compared. RESULTS: Improvement of atypical depressive symptoms after 1 hour of light therapy positively correlated with improvement after 2 weeks of therapy. CONCLUSION: In patients with SAD, the early response to light therapy may predict some aspects of long-term response to light therapy, but these results should be treated with caution until replicated. (+info)Effects of alpha-methyl-para-tyrosine-induced catecholamine depletion in patients with seasonal affective disorder in summer remission. (8/73)
Noradrenergic and dopaminergic mechanisms have been proposed for the pathophysiology of seasonal affective disorder (SAD). We investigated the effects of catecholamine depletion using alpha-methyl-para-tyrosine (AMPT), an inhibitor of tyrosine hydroxylase, in patients with SAD in natural summer remission. Nine drug-free patients with SAD by DSM-IV criteria, in summer remission for at least eight weeks, completed a double-blind, crossover study. Behavioral ratings and serum HVA and MHPG levels were obtained for 3-day sessions during which patients took AMPT or an active control drug, diphenhydramine. The active AMPT session significantly reduced serum levels of HVA and MHPG compared with the control diphenhydramine session. The AMPT session resulted in higher depression ratings with all nine patients having significant clinical relapse, compared with two patients during the diphenhydramine session. All patients returned to baseline scores after drug discontinuation. Catecholamine depletion results in significant clinical relapse in patients with SAD in the untreated, summer-remitted state. AMPT-induced depressive relapse may be a trait marker for SAD, and/or brain catecholamines may play a direct role in the pathogenesis of SAD. (+info)"Seasonal Affective Disorder (SAD) is a type of recurrent major depressive disorder characterized by episodes of depression that occur during the same season each year, typically starting in fall and continuing into winter."
Seasonal Affective Disorder (SAD) is not specifically defined in the latest edition of the Diagnostic and Statistical Manual of Mental Disorders (DS-5), which is used by mental health professionals to diagnose mental conditions. However, it is classified as a recurrent major depressive disorder with a seasonal pattern.
According to the DSM-5, a seasonal pattern is defined as: "There has been a regular temporal relationship between the onset of major depressive episodes in major depressive disorder and a particular time of the year (e.g., always starts in fall or winter)." This means that someone with SAD experiences depressive symptoms during specific seasons, most commonly in late fall or winter, but in some cases, also in spring or summer.
The symptoms of SAD may include:
* Feeling depressed most of the day, nearly every day
* Losing interest in activities you once enjoyed
* Having low energy
* Having problems sleeping
* Experiencing changes in appetite or weight
* Feeling sluggish or agitated
* Having difficulty concentrating
* Feeling hopeless, worthless or guilty
* Having thoughts of death or suicide
These symptoms must be more severe than just feeling "blue" or having a bad day. They also must cause significant distress or impairment in social, occupational, or other important areas of functioning. Additionally, the symptoms must not be due to substance use or another medical condition.
Phototherapy is a medical treatment that uses light, typically in the form of specific wavelengths of visible or ultraviolet (UV) light, to manage various conditions such as skin disorders, jaundice in newborns, and seasonal affective disorder, among others.
Phototherapy is a medical treatment that involves the use of light to manage or improve certain conditions. It can be delivered in various forms, such as natural light exposure or artificial light sources, including lasers, light-emitting diodes (LEDs), or fluorescent lamps. The wavelength and intensity of light are carefully controlled to achieve specific therapeutic effects.
Phototherapy is most commonly used for newborns with jaundice to help break down bilirubin in the skin, reducing its levels in the bloodstream. This type of phototherapy is called bilirubin lights or bili lights.
In dermatology, phototherapy can be applied to treat various skin conditions like psoriasis, eczema, vitiligo, and acne. Narrowband ultraviolet B (UVB) therapy, PUVA (psoralen plus UVA), and blue or red light therapies are some examples of dermatological phototherapies.
Phototherapy can also be used to alleviate symptoms of seasonal affective disorder (SAD) and other mood disorders by exposing patients to bright artificial light, which helps regulate their circadian rhythms and improve their mood. This form of phototherapy is called light therapy or bright light therapy.
It's essential to consult a healthcare professional before starting any phototherapy treatment, as inappropriate use can lead to adverse effects.
'Color Therapy', also known as chromotherapy, is a form of complementary medicine that uses colored light to treat various physical and mental conditions, although its efficacy is not supported by scientific evidence and is often considered pseudoscience.
Color therapy, also known as chromotherapy, is a complementary medicine practice that uses color and light to balance energy in the body, mind, and spirit with the goal of promoting physical and emotional health and well-being. It is based on the idea that different colors correspond to the seven main chakras or energy centers in the body and can help to balance, heal, and restore these centers.
In color therapy, various colors are used to treat different conditions. For example, red is thought to stimulate and energize, while blue is considered calming and soothing. Practitioners may use colored lights, colored fabrics, or other tools to expose the body to specific colors. Some practitioners also incorporate color therapy into other forms of healing, such as massage or acupuncture.
It's important to note that there is limited scientific evidence to support the use of color therapy for specific medical conditions. While some people report feeling better after receiving color therapy, it should not be used as a substitute for conventional medical care. If you are considering trying color therapy, it is a good idea to discuss it with your healthcare provider first.
Melatonin is a hormone primarily produced by the pineal gland in the brain, which regulates sleep-wake cycles responding to darkness and light, its synthesis and release being suppressed by natural light exposure or bright artificial light. (A2A)
Melatonin is a hormone that is produced by the pineal gland in the brain. It helps regulate sleep-wake cycles and is often referred to as the "hormone of darkness" because its production is stimulated by darkness and inhibited by light. Melatonin plays a key role in synchronizing the circadian rhythm, the body's internal clock that regulates various biological processes over a 24-hour period.
Melatonin is primarily released at night, and its levels in the blood can rise and fall in response to changes in light and darkness in an individual's environment. Supplementing with melatonin has been found to be helpful in treating sleep disorders such as insomnia, jet lag, and delayed sleep phase syndrome. It may also have other benefits, including antioxidant properties and potential uses in the treatment of certain neurological conditions.
It is important to note that while melatonin supplements are available over-the-counter in many countries, they should still be used under the guidance of a healthcare professional, as their use can have potential side effects and interactions with other medications.
The term 'seasons' does not have a specific medical definition; it is commonly used in the context of seasonal variations in climate, which can influence various health-related factors such as the prevalence of allergies, mental health disorders, and infectious diseases.
I'm sorry for any confusion, but "seasons" is not a term that has a medical definition. Seasons refer to the four divisions of the year (spring, summer, autumn or fall, and winter) based on the position of the earth in its orbit around the sun. If you have any questions related to health or medicine, I'd be happy to try to help answer those!
'Circadian Rhythm' refers to an endogenous, approximately 24-hour biological rhythm that regulates various physiological processes such as sleep-wake cycle, body temperature, and hormone secretion, primarily controlled by a group of genes and environmental cues like light and darkness.
A circadian rhythm is a roughly 24-hour biological cycle that regulates various physiological and behavioral processes in living organisms. It is driven by the body's internal clock, which is primarily located in the suprachiasmatic nucleus (SCN) of the hypothalamus in the brain.
The circadian rhythm controls many aspects of human physiology, including sleep-wake cycles, hormone secretion, body temperature, and metabolism. It helps to synchronize these processes with the external environment, particularly the day-night cycle caused by the rotation of the Earth.
Disruptions to the circadian rhythm can have negative effects on health, leading to conditions such as insomnia, sleep disorders, depression, bipolar disorder, and even increased risk of chronic diseases like cancer, diabetes, and cardiovascular disease. Factors that can disrupt the circadian rhythm include shift work, jet lag, irregular sleep schedules, and exposure to artificial light at night.
Seasonal affective disorder
... (SAD) is a mood disorder subset in which people who typically have normal mental health throughout ... Seasonal Affective Disorder at Curlie What is Bipolar Disorder? at HopeQure USA National Institute of Mental Health webpages ... A study of more than 2000 people there found the prevalence of seasonal affective disorder and seasonal changes in anxiety and ... "What is SAD (Seasonal Affective Disorder)?". Retrieved February 21, 2018. "Bipolar Disorder". HopeQure. Retrieved February 18, ...
Occupational therapy in the management of seasonal affective disorder
... and their combination in treating seasonal affective disorder". Journal of Affective Disorders. 80 (2-3): 273-283. doi:10.1016/ ... "Mindfulness-based cognitive therapy for seasonal affective disorder: A pilot study". Journal of Affective Disorders. 168: 205- ... Seasonal Affective Disorder version (SIGH-SAD). This method involves a semi-structured interview that includes 21 non-seasonal ... Schwartz, P. J.; Brown, C.; Wehr, T. A.; Rosenthal, N. E. (1996). "Winter seasonal affective disorder: A follow-up study of the ...
Derek Riggs
He has seasonal affective disorder. As a fan of Iron Maiden, game designer Tim Schafer named the main character of 2009's video ...
Norman E. Rosenthal
Insiders Guide: Season Affective Disorder. CNN "Insider's guide: Seasonal Affective Disorder - CNN". Archived from the original ... He has also co-edited the book Seasonal Affective Disorders and Phototherapy (1989). In 1984, he developed the Seasonal Pattern ... Seasonal affective disorder and light therapy, in The American Psychiatric Association Publishing Textbook of Mood Disorders, ... Rosenthal is referred to as the pioneer of research into seasonal affective disorder. In 1984, he coined the term and began ...
Light therapy
bright light in seasonal affective disorder: Treatment effects and subjective preference". Journal of Affective Disorders. 180 ... including seasonal affective disorder (SAD), circadian rhythm sleep-wake disorders, cancers, and skin wound infections. ... and estradiol Modern phototherapy lamps used in the treatment of seasonal affective disorder and sleep disorders either filter ... The effectiveness of light therapy for treating seasonal affective disorder (SAD) may be linked to the fact that light therapy ...
Negative air ionization therapy
For Seasonal Affective Disorder (SAD), a randomized controlled trial (RCT) comparing high (4.5x1014 ions/second) and low (1.7 ... Westrin, ÅS.; Lam, R. (2007). "Seasonal Affective Disorder: A Clinical Update". Annals of Clinical Psychiatry. 19 (4): 239-46. ... "Controlled Trial of Naturalistic Dawn Simulation and Negative Air Ionization for Seasonal Affective Disorder". American Journal ... "Negative Air Ions in Neuropsychiatric Disorders". Current Medicinal Chemistry. 28 (13): 2521-2539. doi:10.2174/ ...
Pacific Northwest
The darkness contributes to seasonal affective disorder among people living in northern cities, including those in the Puget ... "How to beat 'The Big SAD'; Seasonal Affective Disorder in Western Washington". Fox 13 Seattle. October 28, 2022. Retrieved ...
Joanne Harris
She also suffers from seasonal affective disorder. Harris was a guest on the long-running BBC Radio 4 programme, Desert Island ...
Charmane Eastman
Seasonal affective disorder (SAD or winter depression). Eastman developed a novel placebo treatment that she used to ... She has also studied winter depression, more properly known as seasonal affective disorder (SAD). Of special focus are the ... "Circadian rhythm sleep disorders: part I, basic principles, shift work and jet lag disorders. An American Academy of Sleep ... Sleep disorders, University of Chicago alumni, Rush University faculty, Year of birth missing (living people), Living people). ...
Zeitgeber
Seasonal affective disorder may occur as a result of deficiencies in zeitgebers (such as light) during the winter months that ... Lam, R.; Levitan, R. (2000). "Pathophysiology of seasonal affective disorder: A review". Journal of Psychiatry and Neuroscience ... Ban, T. A. (1985). "Affective disorders: Biological aspects". Acta Neurologica. London: Oxford University Press. 7 (2): 129-34 ... For bipolar disorder, Interpersonal and Social Rhythm Therapy (IPSRT) is meant to regulate and normalize an individual's social ...
Bupropion
"Seasonal affective disorder drug Wellbutrin XL wins approval". CNN. 14 June 2006. Archived from the original on 30 June 2007. ... In 2006, Wellbutrin XL was similarly approved as a treatment for seasonal affective disorder. In October 2007, two providers of ... March 2019). "Second-generation antidepressants for preventing seasonal affective disorder in adults". The Cochrane Database of ... bupropion prevents development of depression in those who have recurring seasonal affective disorder: 15% of participants on ...
Epidemiology of suicide
See Seasonal affective disorder "Suicide: Practice Essentials, Overview, Etiology". 28 October 2016. Retrieved 19 March 2017 - ... The variation in suicides by day of the week is greater than any seasonal variation. Certain time trends can be related to the ... Psychiatric disorders and disability in the female homosexual". The American Journal of Psychiatry. 127 (2): 147-54. doi: ... Depression, either unipolar or as part of bipolar disorder, is an especially common cause. Substance abuse, severe physical ...
Acetylserotonin O-methyltransferase
Seasonal affective disorder, bipolar disorder, or major depressive disorder) exists. Melatonin levels can also be used as a ... Melatonin levels are used as a trait marker for mood disorders, meaning that abnormal levels of melatonin can be used in ... 2010). "Mutation screening of melatonin-related genes in patients with autism spectrum disorders". BMC Med. Genom. 3: 10. doi: ... 2007). "Is ASMT a susceptibility gene for autism spectrum disorders? A replication study in European populations". Mol. ...
Swedish Agency for Health Technology Assessment and Assessment of Social Services
In 2007 SBU assessed the use of light therapy to combat seasonal affective disorder, finding no evidence to support the claim. ... and Other Treatment of Seasonal Affective Disorder". www.sbu.se. Retrieved 2017-06-07. Crouch, David (2015-01-24). "Swedish ...
Overcast
... weather can also affect people suffering from seasonal affective disorder. The same weather when observed from above ...
Mental illness in ancient Rome
Seasonal affective disorder is a medical condition in which the affected person experiences mood changes alongside seasonal ... Examining Chemical Imbalances and Mood Disorders. Enslow Publishers. p. 51. ISBN 978-1622930609. Seasonal affective disorder ( ... Mood disorders, Schizophrenia, Stoicism, History of mental disorders, Bipolar disorder, Ancient Roman medicine). ... This disorder resembles bipolar disorder, which is defined by episodes of mania and depression. It was thought to be caused by ...
Fort Wainwright
It also potentially contributes to Seasonal Affective Disorder (SAD) among the workforce.[citation needed] Fairbanks falls in a ... This, coupled with the periglacial effect of seasonal freezing and thawing, can drastically modify the ground surface. ... Fort Wainwright is located in a subarctic climate with seasonal temperature extremes. Temperature extremes have been recorded ...
Arnold Eskin
"Why Many of Us Suffer Seasonal Affective Disorder" Brain Science Institute [1]. Retrieved 2014-04-22. "The Esther Farfel Award ...
Electric light
bright light in seasonal affective disorder: Treatment effects and subjective preference". Journal of Affective Disorders. 180 ... Sanassi, Lorraine A. (February 2014). "Seasonal affective disorder: Is there light at the end of the tunnel?". JAAPA. 27 (2): ... Thompson, C.; Stinson, D.; Smith, A. (1990-09-22). "Seasonal affective disorder and season-dependent abnormalities of melatonin ... and seasonal affective disorder. Lamps which emit a specific frequency of blue light are also used to treat neonatal jaundice ...
Major depressive episode
Hypersomnia is often associated with atypical depression as well as seasonal affective disorder. A general lack of energy, ... Common comorbid disorders include eating disorders, substance-related disorders, panic disorder, and obsessive-compulsive ... obsessive-compulsive disorder) Bipolar disorder Bipolar II disorder Cyclothymic disorder Depression due to a general medical ... Bipolar disorder, Depression (mood), Major depressive disorder, Mood disorders). ...
Melanopsin
... gene in seasonal affective disorder". Journal of Affective Disorders. 114 (1-3): 279-285. doi:10.1016/j.jad.2008.08.005. PMC ... Mutations in the Opn4 gene can lead to clinical disorders, such as Seasonal Affective Disorder (SAD). According to one study, ... A missense mutation in Opn4, P10L, has been implicated in 5% of patients with Seasonal Affective Disorder (SAD). This is a ...
Winter-over syndrome
These include stress, social isolation, subsyndromal seasonal affective disorder and polar T3 syndrome. It would appear that ...
Shon Hopwood
Clarity in Criminal Law, American Criminal Law Review (2016) Seasonal Affective Disorder: Clerk Training and the Success of ... Blake, William; Hacker, Hans; Hopwood, Shon (August 13, 2015). "Seasonal Affective Disorder: Clerk Training and the Success of ...
Dark therapy
Clinical depression Light therapy Seasonal affective disorder Sleep hygiene Phelps, James (2008-01-01). "Dark therapy for ... Barbini, B (2005). "Dark Therapy for Mania: a pilot study". Bipolar Disorders. 7 (1): 98-101. doi:10.1111/j.1399-5618.2004. ... Phelps, James (2008-01-01). "Dark therapy for bipolar disorder using amber lenses for blue light blockade". Medical Hypotheses ... Bipolar Disorders. 18 (3): 221-232. doi:10.1111/bdi.12390. PMC 5089565. PMID 27226262. Franke, L.; Sülflow, D.; Stark, K.; ...
Basic helix-loop-helix ARNT-like protein 1
Arntl, Npas2, and Per2 have also been associated with seasonal affective disorder in humans. Alzheimer's patients have ... An SNP in Bmal1 was identified as having a link with bipolar disorder. ... were discovered to be lower in patients with bipolar disorder, suggesting a problem with circadian function in these patients. ... "Are circadian rhythms new pathways to understand Autism Spectrum Disorder?". Journal of Physiology, Paris. 110 (4 Pt B): 434- ...
Phase response curve
... light therapy is used as treatment for several affective disorders including seasonal affective disorder (SAD). In 2002 Brown ... "Light therapy for seasonal affective disorder with blue narrow-band light-emitting diodes (LEDs)". Biological Psychiatry. 59 (6 ... Chronobiology Circadian rhythm sleep disorder Delayed sleep phase disorder Canavier CC (2006). "Phase response curve". ... Various sleep disorders and externals stresses (such as jet lag) can interfere with this. People with non-24-hour sleep-wake ...
Color psychology
Glickman G, Byrne B, Pineda C, Hauck WW, Brainard GC (March 2006). "Light therapy for seasonal affective disorder with blue ... such as seasonal affective disorder (SAD), age-related cognitive decline, depression, and hypertension among others. However, ... of an antiepileptic pill increased the risk of in-adherence to the medication in patients diagnosed with a seizure disorder. ...
Dawn simulation
Some patients with seasonal affective disorder use both dawn simulation and bright light therapy to provide maximum effect at ... "Controlled trial of naturalistic dawn simulation and negative air ionization for seasonal affective disorder". Am J Psychiatry ...
Relative age effect
Increased rates in Seasonal affective disorder relate to the Influence of seasonal birth in humans. "Birthdate Effects: A ... "A birth-season/DRD4 gene interaction predicts weight gain and obesity in women with seasonal affective disorder: A seasonal ... Seasonal birth in humans varies, and alongside the relative age effect the epidemiology of seasonal births show over- ... winter and spring babies related to schizophrenia and mania/bipolar disorder. Schizoaffective disorder can be related to ...
Well-being contributing factors
Perhaps the changing norms of sunlight cause seasonal affective disorder, which undermines level of happiness. Positive ... Journal of Affective Disorders. 140 (3): 205-14. doi:10.1016/j.jad.2011.12.036. PMC 3330161. PMID 22244375. Lucas RE, Lawless ... Happiness or hedonic/Affective well-being measurement is measured with the positive and negative affect schedule (PANAS), a ... However, aerobic exercise has no significant effect on anxiety disorders. In 2005 a study conducted by Andrew Steptow and ...
Mood (psychology)
There is a common mood disorder called Seasonal Affective Disorder (SAD) that often occurs during the winter months when there ... Partonen, Timo; Lönnqvist, Jouko (1998-03-01). "Seasonal Affective Disorder". CNS Drugs. 9 (3): 203-12. doi:10.2165/00023210- ... Depression, chronic stress, bipolar disorder, etc. are considered mood disorders. It has been suggested that such disorders ... "Platelet serotonergic functions and light therapy in seasonal affective disorder". Psychiatry Research. 78 (3): 163-172. doi: ...
Life satisfaction
Seasonal affective disorder is hypothesized to be caused by diminishing exposure to environmental light, which can lead to ... There are currently a few treatment therapies in order to help with seasonal affective disorder. The first line of therapy is ... Primarily within the winter months of the year, an onset of depression can affect one, called seasonal affective disorder (SAD ... Partonen, Timo; Lönnqvist, Jouko (1998-10-24). "Seasonal affective disorder". The Lancet. 352 (9137): 1369-1374. doi:10.1016/ ...
Seasonal effects on suicide rates
... bipolar disorder type II)". When a mood disorder recurs in a seasonal pattern it is described as a seasonal affective disorder ... "Temperament traits in seasonal affective disorder, suicide attempters with non-seasonal major depression and healthy controls ... "What is Seasonal Affective Disorder?". Archived from the original on 2012-03-02. Retrieved 2012-03-07. Deisenhammer E. A. (2003 ... Journal of Affective Disorders, 81, 133-139. Lester D.; Frank M. (1988). "Sex differences in the seasonal distribution of ...
Dual circadian oscillator model
Research on seasonal affective disorder (SAD) has shown that men with SAD have longer melatonin secretion in the winter than ... His research has also provided insights into the circadian clock's role in Seasonal Affective Disorder (SAD) and other related ... Lam RW, Levitan RD (November 2000). "Pathophysiology of seasonal affective disorder: a review". Journal of Psychiatry & ... Other oscillators, including seasonal oscillators, have been found to work in conjunction with circadian oscillators in order ...
Mood disorder
Seasonal affective disorder (SAD), also known as "winter depression" or "winter blues", is a specifier. Some people have a ... A mood disorder, also known as an affective disorder, is any of a group of conditions of mental and behavioral disorder where a ... or under-reporting of affective symptoms by patients with euthymic mood disorder". Journal of Affective Disorders. 148 (2-3): ... The occurrence of low-level depression during the winter months, or seasonal affective disorder, may have been adaptive in the ...
Shift work sleep disorder
"Seasonal affective disorder treatment: Choosing a light box". MayoClinic.com. Retrieved 2010-12-30. deHaro D, Kines KJ, ... These symptoms are not better explained by another sleep disorder, medical or neurologic disorder, mental disorder, medication ... Shift work sleep disorder (SWSD) is a circadian rhythm sleep disorder characterized by insomnia, excessive sleepiness, or both ... SWSD can increase the risk of mental disorders. Specifically, depression, anxiety, and alcohol use disorder is increased in ...
Sleep and emotions
"Diurnal variation of symptoms in seasonal affective disorder". Psychiatry Research. 37 (1): 105-111. doi:10.1016/0165-1781(91) ... Circadian sleep-rhythm disorders like shift-work disorder or Jetlag-disorder have been found to similarly contribute to the ... panic disorder, obsessive-compulsive disorder, and posttraumatic stress disorder. Overall deficient sleep plays a role in ... Journal of Affective Disorders, 150(1), 152-155. doi:10.1016/j.jad.2012.12.017 Gruber, R., & Cassoff, J. (2014). The interplay ...
Agomelatine
June 2019). "Melatonin and agomelatine for preventing seasonal affective disorder". The Cochrane Database of Systematic Reviews ... its use to treat individuals with seasonal affective disorder. "Valdoxan Product Information" (PDF). TGA eBusiness Services. ... is an atypical antidepressant most commonly used to treat major depressive disorder and generalized anxiety disorder. One ... Agomelatine has been found more effective than placebo in the treatment of generalized anxiety disorder in a number of short- ...
History of Modern Biomedicine Research Group
The Recent History of Seasonal Affective Disorder (SAD): 30 Years of SAD' was undertaken on the topic of Seasonal Affective ... E M Jones and E M Tansey 2014 ISBN 978 0 90223 895 4 The Recent History Of Seasonal Affective Disorder (SAD) Edited by C Overy ... 2014). The Recent History Of Seasonal Affective Disorder (SAD). London: Queen Mary, University of London. ISBN 978-0-90223-897- ... Disorder. This resulted in a number of podcasts, and Volume 51 of the Witness Seminar publications. In 2015 the Group began ...
Seasonal Pattern Assessment Questionnaire
The SPAQ is a screening instrument for seasonal affective disorder (SAD), a recurrent major depressive disorder that typically ... Melrose, Sherri (2015). "Seasonal Affective Disorder: An Overview of Assessment and Treatment Approaches". Depression Research ... Lam, Raymond W.; Levitt, Anthony J. (1999). "Canadian Consensus Guidelines for the Treatment of Seasonal Affective Disorder" ( ... The Seasonal Pattern Assessment Questionnaire, or SPAQ, is a simple, self-administered screening test for Seasonal Affective ...
Tord Wingren
ISBN 978-1-4244-4087-0. phinfan (2023-01-12). "How to Minimize Effects of Seasonal Affective Disorder (SAD) , Jeff Howard's Las ... Analysis for Science, Engineering and Beyond Workshop 2008 How to Minimize Effects of Seasonal Affective Disorder (SAD) ... Handset Evolving How to become the Leader in the Mobile Telecom Industry How to Minimize Effects of Seasonal Affective Disorder ...
Major depressive disorder
Seasonal affective disorder, a type of depression associated with seasonal changes in sunlight, is thought to be triggered by ... "Seasonal affective disorder" (SAD) is a form of depression in which depressive episodes come on in the autumn or winter, and ... Depression can also be exacerbated during particular months (usually winter) in those with seasonal affective disorder. While ... Melrose S (1 January 2015). "Seasonal Affective Disorder: An Overview of Assessment and Treatment Approaches". Depression ...