Seasonal Affective Disorder - American Family Physician
Dec 1, 2012 - Seasonal affective disorder is a combination of biologic and mood disturbances with a seasonal pattern, typically occurring in the autumn and winter with remission in the spring or summer. In a given year, about 5 percent of the U.S. population experiences seasonal affective disorder, ...
American Family Physician : Article
https://www.aafp.org/afp/2012/1201/p1037.html
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