A small patch of baldness on the top of the head is usually a manifestation of baldness, which is mostly associated with endocrine abnormalities, genetic factors, emotional stress, such as sleep disorders, depression, depression, anxiety, etc. It is also associated with autoimmune disorders or diseases affecting immune function such as atopic dermatitis and lupus erythematosus. In addition, viral infections, use of certain medications, vaccinations and other factors may also cause immune dysfunction and thus induce baldness. After the symptoms of baldness occur, patients are advised to visit the dermatology department of a hospital for treatment. In some patients, no obvious cause can be found, and the hair follicles may disappear completely after long-term destruction by immune inflammation, leading to permanent hair loss. Treatment modalities mainly include medication and physical therapy. Commonly used drugs include topical drugs, such as local injection of glucocorticoids or topical glucocorticoid cream, minoxidil tincture, etc., and oral drugs, such as blood nourishing and hair growth capsule, cyclosporine soft capsule, etc. In addition, sedatives, such as diazepam, can be given to patients with mental tension, anxiety and insomnia. In addition, physical therapy such as laser treatment, ultraviolet radiation, and photodynamic therapy can be supplemented to help relieve the phenomenon of baldness. In addition, patients need to actively adjust their emotions, maintain an optimistic attitude, work and rest regularly, and avoid staying up late at night as much as possible. Pay attention to a light diet, try to avoid irritating foods such as chili, pepper, raw garlic, seafood, fried food or barbecue, and avoid smoking and drinking alcohol, all of which are usually beneficial to the recovery of the disease.