Polycystic ovary syndrome often begins in adolescence, with primary clinical manifestations including menstrual disorders, excess androgens, and obesity. First, menstrual disorders are the most prominent symptoms, often characterized by infrequent menstruation, with cycles ranging from 35 days to 6 months, or amenorrhea. Before amenorrhea, there may be scanty menses or infrequent menstruation. It can also present as irregular uterine bleeding with no regular pattern in menstrual cycle, period, or flow. Second, infertility. Women of childbearing age may experience infertility due to ovulatory disorders. Third, hirsutism is the most common manifestation of high androgen levels. It appears in varying degrees, primarily affecting sexual hair, with dense pubic hair showing a male pattern tendency, extending around the anus, groin, or midline of the abdomen. There may also be fine mustache hair on the upper lip or hair around the nipple. Oily skin is also common, related to the accumulation of androgens stimulating vigorous secretion from the sebaceous glands. Fourth, obesity. Over 50% of patients are obese, commonly exhibiting abdominal obesity. Fifth, acanthosis nigricans. Occurs in areas such as the labia, the back of the neck, armpits, under the breasts, and the groin, where skin folds are present. This is characterized by symmetric grey-brown pigmentation, thickened skin, and a soft texture.