Seasonal disorder: Seasonal affective disorder (sad) is a kind of depression that occurs at a certain time of the year, usually in the winter.Causes, incidence, and risk factors.Sad may begin during the teen years or in adulthood. Like other forms of depression, it occurs more often in women than in men.People who live in places with long winter nights are at greater risk for sad.
Answered 7/31/2017
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No: It is caused seasonal because it has recurrent pattern of occurring at certain times of the year. Most people who have SAD experience symptoms in the fall or winter. But there are a smaller number of people who have their episodes in the spring and summer.
Answered 5/4/2017
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