It is more likely that there is a patch of hairlessness on the head. It is mainly due to genetic factors, secondary reactions due to sebaceous hyperplasia, sebaceous nevus, and inflammatory alopecia due to folliculitis. In clinical treatment, you can apply local puncture of plum blossom needle to promote local blood circulation of scalp and promote hair growth. It can also be treated with topical application of minoxidil hydrochloride tincture, and can be combined with oral administration of Jing Wu capsule to promote the therapeutic effect of nourishing blood and hair growth. During the treatment period, avoid spicy and stimulating foods, including raw onion, raw garlic, strong tea, coffee, etc., ensure good rest and sleep, and actively treat the primary disease.