SAD Directory
Seasonal affective disorder (SAD) is a form of depression that occurs seasonally. Treatments include medications and therapies such as light therapy. Follow the links below to find WebMD's comprehensive coverage about what causes SAD, how to treat it, and much more.
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As winter approaches and the days get shorter, millions of people once again develop the sadness and loss of energy that is characteristic of seasonal affective disorder. Find out what's behind this mysterious condition and what can be done about it.
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