Polycystic ovarian syndrome (PCOS) or polycystic ovary syndrome, hyperandrogenic chronic anovulation, hyperandrogenic ovarianism, scleropolitic ovaries, etc. is one of the most common disorders in endocrinological practice and according to the World Healrh Organization (WHO) the most common endocrine disorder in women in reproductive age. In essence, PCOS is a complex of hormonal disorders that affect the whole body of the woman and the ultimate health. It was first described in 1935 by Stein and Leventhal in women with infertility, obesity, hair, amenorrhea and polycystic ovaries. Therefore the condition is also known as Stein-Leventhal's Syndrome. The concept of hyperandrogenic ovarianism is wider, although in the narrow sense it is meant polycystic ovary syndrome (PCOS).