Symptoms of premenstrual dysphoric disorder (PMDD) recur during the premenstrual phase of the cycle and disappear to the beginning or after last menstruation. The main symptoms are emotional liability, dysphoria and anxiety.To review PMDD for helping in the differential diagnosis between this disease and classical anxiety disorders.It was made a clinical review about differential diagnosis and comorbilities on PMDD in specialized literature and Pub-Med.PMDD causes significant distress and impairment in social or occupational functioning the first week following menstruation. In relation with differential diagnosis on PMDD, on the one hand, several organic diseases could produce the same symptoms than PMDD: for example gynecological pathology as dysmenorrhea or menopausal transition, endocrinological diseases as hypothyroidism and hyperthyroidism and some hormonal treatment including hormonal contraceptives. In addition, a variety of medical disorders are concomitant pathologies that could be associated with PMDD (eg, migraine; epilepsy, asthma, allergies, systemic exertion intolerance disease, chronic fatigue syndrome; irritable bowel syndrome). These pathologies are exacerbated just before or during menstruation. On the other hand, several psychiatric disorders as bipolar disorder, major depression, dystimia, and anxiety disorders could get worse on the premenstrual phase.In relation with the diagnosis of PMDD, it seems necessary to consider various differential diagnosis such as psychiatric, gynecological and endocrine disorders because of all of them share like symptoms. For this purpose it is very important to make both a good clinical history and a comprehensive physical examination to offer the most accurate diagnosis and treatment.