Scalp itchy dandruff, consider and improper cleaning, seborrheic dermatitis, psoriasis and other factors related to the patient can be through the daily care, topical medication and other ways to treat. 1. Improper cleaning: If patients do not pay attention to scalp cleaning in their daily life, it is easy to have itchy scalp and dandruff. Patients can usually use mild non-stimulating shampoo cleaning, the scalp in the dirt clean, to relieve the symptoms of itchy head, dandruff. 2. Seborrheic dermatitis: If the patient’s scalp is infected with Malassezia, the symptoms of itchy head and dandruff will also appear. Patients can follow the doctor’s instructions to use selenium disulfide shampoo to clean the scalp, which can play the role of antibacterial, anti-itching. 3. Psoriasis: When psoriasis involves the scalp, it may produce itchy scalp and dandruff, you can follow the doctor’s instructions to use carbotriol applicator to smear the scalp, inhibit the proliferation of skin cells and induce their differentiation, so as to treat psoriasis of the scalp. If itchy dandruff occurs, it is recommended to go to the hospital, under the guidance of the doctor’s treatment.