Seasonal Affective Disorder Sad

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Definition

Seasonal affective disorder (SAD) refers to episodes of depression that occur every year during fall or winter. Symptoms improve in spring and summer.


Alternative Names

Depression - winter; SAD


Causes, incidence, and risk factors

The disorder may begin in adolescence or early adulthood. Like other forms of depression, it occurs more often in women than in men.

Most people with the "winter blahs" or "cabin fever" do not have SAD. People who live in places with long winter nights are not...

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Understanding Winter Seasonal Affective Disorder (SAD)

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Who is at risk? People living in the northern hemisphere are most prone to winter SAD and, in general, the higher the latitude the more significant the risk of developing symptoms*.  These symptoms are relatively diverse in nature and may affect...