Patchy baldness for more than a year, need to be based on the health of the hair follicles to confirm whether it can grow new hair. 1. Can grow hair: Patchy baldness may be related to heredity, autoimmune conditions, etc. The course of patchy baldness lasts for a long time, and in severe cases, it may last for several years, and it can be healed naturally. If the area of baldness is small and the hair follicles are still alive, it is more likely to grow hair. 2. Can not grow hair: for total baldness, creeping baldness and other cases, or with autoimmune diseases, if the hair follicles have been atrophied seriously, the probability of growing hair is smaller. If necessary, you can apply topical minoxidil application, use photodynamic therapy, carbon dioxide fractional laser and other treatments to try to grow hair. If necessary, wigs can be used to improve the image. It is recommended that patients with pemphigus should seek medical attention and follow the doctor’s instructions to avoid aggravation of pemphigus.