Dermatitis and ringworm are two different diseases, the treatment program is different, and because of individual differences, the specific type of drug should be based on individual, commonly used ointment tacrolimus ointment, compound dexamethasone acetate cream, ketoconazole cream and so on. 1. Dermatitis: a common skin disease with complex causes, including allergies, infections, heredity, physical stimulation. Dermatitis patients can follow the doctor’s instructions to use topical tacrolimus ointment, pimecrolimus cream, compound dexamethasone acetate cream and so on on the basis of keeping away from the relevant sensitizers, in addition to oral antihistamine drugs, such as chlortetracycline, benadryl and so on, in accordance with the doctor’s instructions. 2. Ringworm: a skin disease caused by fungal infection. Should follow the doctor’s instructions for local use of antifungal drugs, such as ketoconazole, terbinafine cream, etc., if the lesions are extensive, oral itraconazole, terbinafine and other drugs, to carry out the treatment. It is recommended that patients go to the hospital in a timely manner, follow the doctor’s instructions for treatment, and avoid blind use of medication, so as not to cause discomfort.