Polycystic Ovary Syndrome (PCOS) is a common reproductive endocrine disorder, affecting about 5% of women. In women with polycystic ovaries, the ovaries are enlarged with multiple small cysts, which are nothing but the immature eggs which are not growing. These ovaries also have thick stroma which produces excessive androgens. They may also have an altered ratio of pituitary hormones- FSH and LH which interferes with ovulation. Excessive androgens are also responsible for acne and hirsutism.