Baldness at the back of the head may be caused by congenital factors, spot baldness, scalp ringworm and other factors. It is recommended to pay attention to life and dietary adjustments, and if necessary, give topical medications and oral medications for treatment. 1. Congenital factors: Baldness may be caused by congenital factors, such as dysplasia, abnormal hair follicle structure and so on. Congenital baldness may be caused by developmental defects that result in missing or thinning hair. If necessary, hair transplantation surgery may be performed to improve the appearance. 2. Patchy baldness: Patchy baldness is a kind of limited hair loss that occurs suddenly, and patients usually do not have any self-conscious symptoms. It is recommended to maintain a happy mood, do not often work overtime and stay up late, pay attention to nutritional supplements, external minoxidil tincture coating, oral prednisone and other medications. 3. Tinea capitis: Tinea capitis, also known as ringworm of the scalp, is a contagious disease caused by dermatophyte infection of the scalp and hair, which may lead to hair loss. You can use sulfur ointment and terbinafine cream externally. Oral ashwagandha and fluconazole can inhibit or kill the fungus. If necessary, with oral itraconazole antifungal treatment. The back of the hair is bald, it is recommended to consult a doctor in a timely manner, first find the cause, according to the cause of the doctor’s orders to give the appropriate drug treatment.