Polycystic ovarian syndrome (PCOS) is one of the most common female endocrine disorders. PCOS is a complex heterogeneous disorder of uncertain etiology, but there is strong evidence that it can, to a large degree, be classified as a genetic disease. Other names for this syndrome include polycystic ovary disease, functional ovarian hyperandrogenism, ovarian hyperthecosis, sclerocystic ovary syndrome and Stein-Leventhal syndrome