Seasonal affective disorder (SAD) - Deepstash

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Seasonal affective disorder (SAD)

Seasonal affective disorder (SAD)

Seasonal affective disorder (SAD) is a mood disorder that is characterized by symptoms that occur at the same time each year, usually during the darker, shorter days of fall and winter.

Currently called major depressive disorder with seasonal pattern.

SAD is believed to be triggered by a disturbance in the normal circadian rhythm of the body.

Light entering through the eyes influences this rhythm, and any seasonal variation in night/day pattern can cause a disruption leading to depression.

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Atypical depression is a type of depression that does not follow what was thought to be the "typical" presentation of the disorder. 

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So all together you have:

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People might experience brief periods of not feeling depressed, but this relief of symptoms lasts for two months or less. 

When people use the term clinical depression they are generally referring to major depressive disorder (MDD).

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