ABSTRACT
Premenstrual syndrome includes emotional and/or physical symptoms occurring premenstrually (late luteal phase) but remitting usually during the week before menstruation (follicular phase).
More than 150 symptoms have been implicated in PMS. There are considerable differences in the patterns of symptoms, but there is strong support for cycle-related variability in most subjects. The existence of PMS as a discrete entity has often been questioned; there is a lack of consensus about its definition.
