White ringworm on the skin may be due to tinea corporis and ringworm, white furuncle, psoriasis and so on, need to take antifungal, emollient, glucocorticoid and other ways to relieve. 1. ringworm jock itch: this is caused by fungal infection, in the case of dermatophyte infection, resulting in localized lichen planus, after diagnosis, you can cooperate with the doctor to choose ketoconazole, econazole, clotrimazole and other antifungal drug treatment. 2. white chaff rash: this is good in the face of scaly hypopigmented spots, common in children, most of them will subside on their own, usually do not need special treatment, you can also use moisturizing cream to improve the local dry skin symptoms. 3. Psoriasis: this is a disease caused by a variety of factors interacting with each other, there will be erythema of the skin, which is covered with silvery-white scales, and can be diagnosed through the use of hydrocortisone ointment, dexamethasone cream; other commonly used topical drugs such as vitexin A class of drugs, vitamin D3 derivatives (carbosanol or tacrol), etc., have obvious efficacy. It is recommended that patients need to cooperate with the doctor to improve the examination to determine the cause of lichen planus, and then do targeted treatment and therapy, not blindly use drugs.