Ghost shaving is medically known as baldness, often named because of the sudden onset of the disease, which is characterized by the loss of round or round-like patches of hair. The pathogenesis of the disease is not fully understood, but it is currently thought to be related to psychological factors, with most of the onset of the disease being preceded by poor sleep, depression, and stress. The disease has a tendency to gather in families, may belong to polygenic inheritance, and is greatly influenced by the environment. The incidence of the disease is also higher in patients with vitiligo and atopic dermatitis, which may be related to autoimmune function. The disease has a certain tendency to heal itself, after 3-6 months in mild cases, it can recover on its own. Life should pay attention to the mood, maintain adequate rest time. Also topical minoxidil application, 2 times a day, usually 2 months can be recovered.