Seasonal affective disorders.
The recurrent nature of mania and depression has led to a search for factors that might predict the timing of episodes. There has recently been a resurgence of interest in the possibility that seasonal changes may precipitate affective illness.
Hunt
N
N
Chiltern Community Mental Health Team, Buckinghamshire.
D006801:Humans; D010789:Phototherapy / Q000295:instrumentation / Q000379:methods; D012008:Recurrence; D012307:Risk Factors; D016574:Seasonal Affective Disorder / Q000175:diagnosis / Q000453:epidemiology / Q000628:therapy