Menstruation is an old friend that accompanies women for half of their lives and is a sign of their fertility. But as the pace of life accelerates and social pressure increases, menstrual problems become more and more common, and endocrine disorders come to you quietly without you knowing it. 17-year-old Zhang is a tall and thin senior high school student who has to study for more than 10 hours a day in order to prepare for the college entrance exams, making her feel the pressure of her heavy studies. The company’s main business is to provide a wide range of products and services to the market. The daily life seems to be uneventful. But unbeknownst to her, she has gained weight and her periods are often delayed, even for months. Is it important to have a period when you’ve already had a baby? She was reluctant to come to the doctor even after a long delay. Both of them are the most common cases of polycystic ovary syndrome in endocrine clinics. Polycystic ovary syndrome is a common cause of menstrual disorders in women and can account for 1/3 of all fertility center visits. The cause of polycystic ovary syndrome is not known and the clinical manifestations are varied. Some patients have hirsutism, obesity, amenorrhea, and infertility; however, a significant proportion of patients are of normal weight or even thin. There is also no hirsutism or amenorrhea. Clinical examination may reveal: facial acne, hirsutism, significantly increased blood insulin levels, increased serum androgen levels, low estrogen and progesterone levels, abnormally elevated LH/FSH ratio, and ultrasound showing enlarged ovaries in a markedly polycystic state. What are the risks of polycystic ovary syndrome? What are the consequences of not treating it? For infertile women, polycystic ovary syndrome is one of the common causes of infertility. For middle-aged women without fertility requirements, polycystic ovary syndrome is often accompanied by metabolic disorders such as obesity, hyperlipidemia, fatty liver, and even diabetes. The risk of developing endometrial cancer is greatly increased due to prolonged menstrual sporadism and progesterone deficiency causing excessive proliferation of the endometrium. Treatment of polycystic ovary syndrome is an individualized program that varies from person to person, depending on whether there is a requirement for fertility? A combination of factors such as the presence of metabolic disorders is considered. Treatment includes lifestyle improvement, removal of triggers (stress, emotions, etc.), metformin for weight loss, estrogen and progesterone supplementation, correction of high levels of androgens, ovulation promotion, etc. In conclusion, normal menstruation is a sign of normal ovarian function. When menstrual disorders occur, one must be alert to endocrine disorders and polycystic ovary syndrome. Regardless of age and whether you have already had children or not, you should actively seek medical attention.