Too much dandruff, may be suffering from seborrheic dermatitis, ringworm or psoriasis. 1. Seborrheic dermatitis: localized yellowish fish scale-like scales will appear on the scalp, accompanied by itching, which requires more cleaning of the scalp in general, and anti-inflammatory drugs can be used appropriately, such as glucocorticosteroids such as halomethasone cream, or calcium-modulated phosphatase inhibitors such as tacrolimus ointment. 2. Tinea capitis: the scalp is infected by dermatophytes, resulting in changes in the structure of the hair, hair breakage, bending with dandruff on the scalp, oral antifungal drugs such as terbinafine hydrochloride can be used to treat. 3. Psoriasis: related to genetics, environment, immune function, the specific etiology is not clear. It causes large red spots and scales on the scalp, and can be improved by applying corticosteroid ointment such as halometasone cream to improve the inflammation, or oral immunosuppressants such as cyclosporine. There are many causes of too much dandruff, it is recommended to go to the dermatologist, clear the cause of the disease under the guidance of the doctor under the guidance of the reasonable use of medication.