Acne, or acne, is a chronic inflammatory disease of the sebaceous glands of the hair follicles and is most common in young men and women. Changes in hormone secretion levels in adolescents tend to cause endocrine disorders, resulting in acne during puberty. In addition, menstrual acne is also considered to be caused by endocrine disorders and can gradually disappear with the end of menstruation.1. Adolescent acne: The secretion levels of estrogen and androgen are easily disrupted during adolescence, and the sebaceous glands of hair follicles are regulated by sex hormones. Endocrine disorders increase the secretion of sebaceous glands, providing nutrients and an environment for the growth of microorganisms such as Propionibacterium acnes, while excessive sebum secretion clogs the mouth of hair follicles, which also easily induces acne. 2. Premenstrual acne: When the level of androgen secretion rises during the premenstrual period, the activity of the sebaceous glands increases, and sebum and shed epidermal tissue mix to clog pores, which can lead to premenstrual acne. In addition, women with ovarian cysts, polycystic ovary syndrome, or diabetes may also have acne due to endocrine disorders. Acne is usually found on the cheeks, forehead and jaw, and is characterized by dark red nodules or cysts that tend to form scars after breaking down. In daily life, you should pay attention to your own conditioning, eat a light diet, reduce the intake of high-sugar and high-fat diet; work and rest reasonably, avoid staying up late, exercise appropriately, and maintain a good state of mind; pay attention to strengthening facial care, choose facial cleansing products at the right time to keep the skin clean; avoid sun exposure, and apply medication under the guidance of a doctor if necessary.