Seasonal affective disorder.

Affective disorders and cognitive failures: a comparison of seasonal and nonseasonal depression.

Seasonal depression shares certain common symptoms with nonseasonal depression; however, the two disorders have never been examined in a single study, to the authors' knowledge. The goal of this research was to examine the potential similarities in cognitive impairments in seasonal affective disorder and major depressive disorder in college students in the Midwest. Identification of affective d...

Winter is coming: nightmares and sleep problems during seasonal affective disorder.

Sleep problems, especially nightmares and insomnia, often accompany depression. This study investigated how nightmares, symptoms of insomnia, chronotype and sleep duration associate with seasonal affective disorder, a special form of depression. Additionally, it was noted how latitude, a proxy for photoperiod, and characteristics of the place of residence affect the prevalence of seasonal affec...

The Seasonal Health Questionnaire is more effective at detecting seasonal affective disorder than the Seasonal Pattern Adjustment Questionnaire.

Thompson C, Thompson S, Smith R. Prevalence of seasonal affective disorder in primary care; a comparison of the seasonal health questionnaire and the seasonal pattern assessment questionnaire. J Affect Disord 2004;78:219–26. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ...

Seasonal affective disorder.

Depression during winter has been found to respond to treatment with simulated daylight. Seasonal affective disorder should be distinguished from other forms of depression which can also occur in winter before prescribing light therapy.

Seasonal affective disorder (SAD)?

Seasonal cyclothymia to seasonal bipolar affective disorder: a double switch after stroke.

The appearance of bipolar affective disorder after stroke depends on the presence of two factors: a predisposing factor of either genetic loading or subcortical atrophy, and a lesion of specific corticolimbic pathways involving the right hemisphere. Whether cyclothymia and seasonal affective disorder further predispose to poststroke affective disorder is not clear. A case is described which hig...