Baldness can be caused by spot baldness, which is mainly related to genetic factors, mental factors, autoimmune diseases and other factors. 1. Genetic factors: baldness may be related to heredity, if the phenomenon exists in the family, then the chances of having baldness will also increase. 2. Mental factors: baldness is a non-scarring alopecia, which may be related to factors such as excessive mental stress, shock, and prolonged mental tension. 3. Autoimmune diseases: some autoimmune diseases may also lead to baldness, such as vitiligo, Hashimoto’s thyroiditis, etc., may appear the phenomenon. There are many reasons for hair baldness, it is recommended that patients go to the hospital in time to improve the examination, a clear diagnosis of the choice of standardized treatment, not private treatment, so as not to lead to adverse consequences.