Girls’ hairiness may be related to genetic factors, or it may be due to the development of polycystic ovary syndrome, drug-induced and other factors. 1. Genetic factors: if someone in the family has more hair, the offspring may also have this symptom. 2. Polycystic ovary syndrome: some endocrine-related diseases, such as polycystic ovary syndrome, can be manifested in the body of androgen secretion, which may lead to hirsuteness, obesity, menstrual irregularities and other symptoms, and therefore will produce the symptoms of exuberant hair. 3. Drug-induced: long-term use of glucocorticoids, spironolactone and other drugs may also cause hairy symptoms. Normally, if there is obvious hairy situation, it is recommended to consult a doctor in time to determine whether there is a disease.