Itchy scalp may be caused by seborrheic dermatitis, tinea capitis and other reasons. 1. seborrheic dermatitis: a chronic inflammatory skin disease that occurs in seborrheic overflow areas, commonly seen in the head and face, there may be erythema and greasy flaking, accompanied by itchy scalp, can be used under the guidance of the doctor compound miconazole cream, cotrimoxazole cream and other drugs for treatment. 2. Tinea capitis: may be due to the red trichophyton or epidermal trichophyton and other fungi caused by the head infectious diseases, there will be itchy scalp, hair breakage, scalp, localized with the presence of obvious scales, can be used under the guidance of the doctor ketoconazole cream, oral itraconazole and other drugs for treatment. Therefore, patients with itchy scalp should go to the hospital as soon as possible, and actively cooperate with the doctor for treatment after diagnosis.