Dandruff needs to be treated according to the specific causes, such as psoriasis, seborrheic dermatitis, ringworm, not paying attention to local hygiene, etc. After diagnosis, choose general treatment or drug treatment. 1. Psoriasis: psoriasis can cause dandruff, the treatment can follow the doctor’s instructions to use Hasinide solution, carbotriol application agent for external use, to achieve the effect of dandruff. 2. Seborrheic dermatitis: seborrheic dermatitis can also cause dandruff, can follow the doctor’s instructions to use selenium disulfide lotion for external use, to achieve the purpose of treatment. 3. Tinea capitis: Tinea capitis is a fungal infection that can also cause dandruff, accompanied by local itching. Treatment can follow the doctor’s instructions to use antifungal drugs, such as ketoconazole lotion, if necessary with oral itraconazole. 4. Do not pay attention to local hygiene: daily infrequent hair washing, excessive exercise, etc., can also lead to the phenomenon of dandruff. The phenomenon does not require special treatment, should be good local hygiene can improve the symptoms. Dandruff needs to be treated according to the specific causes, it is recommended that patients go to the hospital in a timely manner, after a clear diagnosis under the guidance of the doctor for treatment, do not use drugs indiscriminately, so as not to lead to adverse consequences.