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Seasonal Affective Disorder (... : Causes

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Causes could include:
Like other forms of depression, it occurs more frequently in women than in men. Most people with the"winter blahs" or"cabin fever" do not have SAD.The cause of SAD is not known, but it is thought to be related to numerous factors, including:.
Source:ADAM
Date:January 15, 2009
Lack of sunlight, normally associated with winter, is considered to be the primary cause of SAD. Although winter temperature may also have an impact, especially in colder areas, the lack of light is most important.
Source:Gale Encyclopedia of Mental Disorders
One variation on this idea is that, during winter, people's internal clocks may become out of sync with the light-dark cycle, leading to a long-term disruption in melatonin release.Seasonal affective disorder, while not an official category of men...
Source:Gale Encyclopedia of Medicine
Doctors usually diagnose seasonal affective disorder based on the patient's description of symptoms, including the time of year they occur. There is also a diagnostic questionnaire called the Seasonal Pattern Assessment Questionnaire, or SPAQ, use...
Source:Gale Encyclopedia of Alternative Medicine
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