Scalp always itchy dandruff may be head cleaning is not clean and other physiological factors, may also be seborrheic dermatitis, ringworm and other diseases caused by the general treatment, medication and other ways of treatment. 1. Physiological factors: If the head is not clean for a long time, there may be itchy scalp, dandruff and other phenomena, you need to do a good job of cleaning the head, choose to use anti-dandruff shampoo to clean the hair. 2. Seborrheic dermatitis: seborrheic dermatitis may also appear itchy scalp with dandruff and other symptoms, should pay attention to diet, while following the doctor’s instructions to apply salicylic acid preparation, selenium disulfide lotion and other drugs to treat. 3. ringworm: ringworm patients with itchy scalp with dandruff and other symptoms, daily need to pay attention to hygiene, you can follow the doctor’s instructions oral terbinafine tablets, gray penicillin tablets and other drugs to treat, but also can be used externally ketoconazole lotion, clotrimazole ointment and other drugs. Scalp always itchy with dandruff crowd, in the exclusion of physiological factors, it is recommended to the hospital for examination, under the guidance of the doctor according to the cause of standardized treatment.