Light therapy of late luteal phase dysphoric disorder: an extended study.

Parry, B L; Mahan, A M; Mostofi, N; Klauber, M R; Lew, G S; Gillin, J C · Am J Psychiatry · 1993

rct · Level II

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Abstract

Nineteen patients with late luteal phase dysphoric disorder (LLPDD) and 11 healthy comparison subjects underwent a 3-month crossover trial of bright (more than 2500 lux) white morning, bright white evening, and placebo dim (less than 10 lux) red evening light, administered daily for 1 week during the premenstrual phase of the menstrual cycle. All light treatments significantly reduced depressive ratings from baseline levels.

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