Usually, the recovery period of baldness is not a period of hair loss while growing. Pemphigus vulgaris may be related to genetic factors, immune abnormalities and other reasons, the patient will locally appear round or oval, different sizes, varying amounts of hair loss area, hair loss at the skin is smooth, no inflammatory reaction. After standardized treatment, patients with patchy baldness will not have hair loss while growing in the recovery period. During the recovery period, new hairs will grow in the hair loss area, and at the beginning, the hairs will be soft and light in color, and with the increase of time, the hairs will gradually become thicker and darker in color, and finally recover completely. It is recommended that patients with spot baldness go to the hospital in time and receive standardized treatment under the guidance of doctors.