Female body hair is mostly related to heredity, but pathological conditions such as topical medications, polycystic ovary syndrome or variant porphyria can also cause excessive hairiness. 1. Heredity: female body hair can be caused by congenital factors, resulting in armpit hair, eyebrow hair or limbs, etc. sweat hair is more, dense, usually no other abnormalities. 2. Topical medication: Long-term use of glucocorticosteroids such as prednisone, androgens such as testosterone and other drugs can cause drug-induced hirsutism, and the local hair will become longer, darker and denser. 3. Polycystic ovary syndrome: a common gynecological endocrine disease, the patient’s body androgen levels are too high, hyperandrogenemia, there can be varying degrees of hirsutism, there is dense pubic hair, hair around the upper lip or areola, etc., but also can have oily skin and acne. 4. variegated porphyria: in addition to blisters in the sunburned areas, easy to erode, but also hirsutism, especially women are prone to temporal hirsutism. Women have more body hair, if it is a pathological manifestation, it is recommended to consult a doctor in time, especially pay attention to endocrinology and sex hormone levels of examination, the cause of the symptomatic treatment.