Dandruff on the head is considered to be a normal physiological phenomenon, seborrheic dermatitis, ringworm of the head, etc., and should be strengthened care, local medication, oral medication. 1. Physiological phenomenon: the scalp area will also have a normal metabolism, if you do not wash your hair often, the metabolism will be in the form of dandruff off, this situation diligently bathe, wash your hair, the use of anti-dandruff shampoo can be relieved. 2. Seborrheic dermatitis of the scalp: a large amount of sebum overflow will be attached to the surface of the greasy scales or scabs. You can use selenium disulfide lotion to clean, local application of ketoconazole, econazole and other antifungal ointment, itching is serious, you can combine oral antihistamine drugs such as loratadine and other treatments. 3. Tinea capitis: dermatophyte infections can cause dermatosis of the scalp, such as tinea versicolor can cause grayish-white scales, you can apply topical clotrimazole, miconazole, terbinafine and other creams, and at the same time, oral ashwagandha, terbinafine and so on. Antifungal shampoos, such as ketoconazole lotion, should also be used consistently to prevent contact infection. If the symptoms of dandruff are not relieved, or accompanied by other symptoms, you should go to the hospital in a timely manner, after the cause is clear to give targeted treatment, the drug should be used in accordance with the doctor’s instructions, do not self-medication.