ABSTRACT
Premenstrual syndrome (PMS) can be defined as the cyclical recurrence during the luteal phase of the menstrual cycle of distressing psychological, behavioural, and physical symptoms not attributable to underlying organic or psychiatric illness. Symptoms essentially occur in the 2 weeks prior to menstruation and resolve by the end of menstruation. The woman should then be free of symptoms between the end of menstruation and subsequent ovulation.
