Polycystic ovary syndrome (PCOS) is a pathology characterized by hyperandrogenemia, ovulation disorders and polycystic ovaries. It has a high prevalence of 5-10% in adolescent and fertile women and accounts for 75% of women with anovulatory infertility and up to 85% of women with hirsutism. The clinical manifestations are amenorrhea, sparse menstruation, failure to establish regular menstruation for 2-3 years after menarche, and monophasic basal body temperature. Sometimes, the absence of regular menstruation is not ovulatory menstruation. 2. Clinical manifestations of hyperandrogenism and hyperandrogenemia, with clinical manifestations of acne and hirsutism. Total serum testosterone and free testosterone are higher than normal values. 3, polycystic ovarian changes with ≥12 follicles of 2-9 mm diameter and/or ovarian volume ≥10 cm3 on one or both ovaries seen on ultrasound.