Premenstrual syndrome and premenstrual dysphoric disorder

Premenstrual syndrome is defined as intense physical , emotional and behavioral changes as well as disturbances in performance, seen in juteal phase of the menstrual period, 7-10 days before menstrual bleeding ; and is most commonly observed between 25-35 ages, This disorder effects the social life of the women. There has been no censenus on the etilology of premenstrual syndrome. in this review , we aimed to emmphasize the importance of this topic while reviewing the avalible literature.