Polycystic ovarian syndrome is a common hormonal endocrine disorder. It is also known as Stein-Leventhal Syndrome. It caused due to formation of cysts on the ovary and don't form sufficient amount of hormone to initiate ovulation. Some of the symptoms of PCOS are irregular ovulation, polycystic ovaries, excessive facial hair growth, skin problems, thinning of hair on the scalp, high level of androgens in the body and irregular or no menstrual periods. The symptoms of PCOS are not related to each other, so the condition is usually overlooked or undiagnosed. The cause of polycystic ovarian syndrome is unknown. Excessive insulin and low grade inflammation are some of the factors which may lead to polycystic ovarian syndrome. There are no specific tests for the diagnosis of polycystic ovarian syndrome. Physical examination, medical history, blood tests, pelvic examination and vaginal ultrasound helps in diagnosis of polycystic ovarian syndrome. Early diagnosis and treatment can help to control the symptoms and prevent long term complications. Some of the complications associated with polycystic ovarian syndrome are sleep apnea, infertility, abnormal uterine bleeding, high blood pressure, uterine cancer, cholesterol and lipid abnormalities and type II diabetes. Treatment for PCOS is dependent on women's age, symptoms and future pregnancy plans. Lifestyle modification, surgery and medications are some of the treatment for PCOS. Surgery is performed to increase the chances of ovulation. Treatment may also include acne treatment, tropical anti hair growth medication, birth control pills to regulate menstruation and insulin sensitizing medication. Spironolactone, metformin, oral contraceptives and eflornithine are some of the drugs used for the treatment of PCOS.