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February 10, 2012
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Seasonal Depression (SAD) (cont.)

Medical Author:
Rick Kulkarni, MD
Coauthor:
Kathryn L Hale, MS, PA-C
Medical Editor:
Ronald C Albucher, MD
Medical Editor:
Francisco Talavera, PharmD, PhD
Medical Editor:
Alan D Schmetzer, MD

Seasonal Depression Causes

The exact causes of seasonal affective disorder (SAD) are unknown.

  • Chemical changes in the brain caused by changes in the amount of sunlight are probably involved. People who live in geographical locations that are dark or cloudy during the winter are most likely to have SAD.
  • A tendency to have SAD may run in some families.

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Seasonal Depression Symptoms»
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Seasonal Depression (SAD) - Symptoms

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What symptoms did you experience with your seasonal depression (SAD)?

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