Premenstrual Syndrome

Abstract
The premenstrual syndrome is a constellation of mood, behavioral, and somatic symptoms that occurs in a cyclical pattern linked to the reproductive cycle in women. Most prevalent hypotheses associate the etiology of the disorder to changes in "menstrual cycle" hormones. Recent findings, however, question the validity of this simple hypothesis, and point toward a considerably more complex etiology. The relevant studies examining the association between endocrine changes and the premenstrual syndrome are reviewed in this paper, along with the currently popular hypotheses of the etiology of this distressing and prevalent disorder. (C) Lippincott-Raven Publishers.

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