Columbia University Medical Center
NewYork-Presbyterian Hospital The University Hospital of Columbia and Cornell
December 16, 2008

Dr. Michael Terman, a professor of psychiatry at Columbia University and an expert on light therapy, says SAD patients often experience cardinal symptoms of depression-like feelings of "gloom and doom," an inability to cope with work and family obligations, and waves of fatigue. It's the crippling nature of SAD that distignuishes it from the passing winter blues.

 

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