The causes of female seborrheic alopecia may be related to the following factors: 1, genetic factors: mainly manifested by the family history of some patients. 2, androgen secretion: after puberty some patients have an increase in androgen secretion, androgen reaches the site of hair follicles through blood circulation, converts into toxic substances, stimulates the hair follicles, makes the protein metabolism of hair follicles impaired, causing hair loss. 3, oily skin: after puberty The excessive secretion of oil, excessive oil accumulation around the hair follicle, the impact on the hair follicle, causing hair loss. 4, other factors: such as often stay up late, sun exposure, often eat spicy food, etc.