Hypertrichosis generally refers to excessive growth and abnormal distribution of female body hair. It is caused by increased production of androgens in the blood circulation, including testosterone, dihydrotestosterone, androstenedione, dehydroepiandrosterone and dehydroepiandrosterone sulfate. Clinically, female sexual characteristics hair may grow excessively and be distributed in a masculine manner. The main manifestations are dense and abundant pubic hair on the face, in front of the ears, around the mouth, in front of the chest, around the nipples, in the armpits, back, lower abdomen, and pubic hair, which is distributed in a diamond shape toward the navel, as well as on the lower limbs and front thighs, often accompanied by irregular menstruation and sexual indifference. Female hirsutism is often considered to be a masculine disease, and there is psychological pressure to seek diagnosis and treatment.