9 Signs of Seasonally Affective Disorder (SAD) (M)

People are diagnosed with SAD if they experience these changes during two consecutive winters.

People are diagnosed with SAD if they experience these changes during two consecutive winters.

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Author: Dr Jeremy Dean

Psychologist, Jeremy Dean, PhD is the founder and author of PsyBlog. He holds a doctorate in psychology from University College London and two other advanced degrees in psychology. He has been writing about scientific research on PsyBlog since 2004.