Polycystic ovarian syndrome (PCOS) is one of the most prevalent endocrinopathies, affecting 5-10% of women of reproductive age. PCOS is one of the commonest causes of anovulatory infertility. The characteristic clinical features of PCOS include menstrual irregularity such as oligomenorrhoea and signs of hyperandrogenaemia including hirsutism, acne, and/or obesity. A recent study observed a significant and progressive correlation between body mass index (BMI) and both blood pressure and clinical features in women with PCOS. Clomifene citrate has been the standard treatment for induction of ovulation in women with anovulatory infertility for many years. The beneficial endocrinologic and morphologic effects of laparoscopic ovarian diathermy appear to be sustained for up to 9 years in most patients with PCOS. In vitro maturation (IVM) protocols are now a valuable alternative to conventional in vitro fertilization (IVF) as a strategy to prevent ovarian hyperstimulation syndrome (OHSS).