Hair growth around the nipple is mostly a normal phenomenon, but it is not excluded that some female patients have polycystic ovary syndrome, hormone secretion imbalance and so on. 1. Normal phenomenon: the hair follicles around the nipple are better developed, which will cause hair growth around the nipple, which is a normal phenomenon and does not need to be treated. 2. Polycystic Ovary Syndrome (PCOS): Patients with PCOS will have elevated androgens in their bodies, resulting in acne, obesity and menstrual irregularities, accompanied by hair growth around the nipples. However, the hairiness of polycystic is generalized and not only seen around the breasts. 3. Hormonal imbalance: If hair growth around the breasts occurs suddenly when you are not pregnant, it is most likely due to a hormonal imbalance, or hormonal abnormalities from hormonal medications. Usually, there are hair follicles around the mammary glands, hair growth is a normal phenomenon, if accompanied by generalized hirsutism, as well as other discomforts, it is recommended to consult a regular hospital, under the guidance of the doctor’s diagnosis and standardized treatment.