There are many differences between buttock eczema and ringworm, with different causes, different symptoms and different treatment measures. 1. different causes: buttock eczema, is due to internal and external factors caused by a variety of inflammatory skin reactions; ringworm, mainly by red fungi, ringworm fungi and other fungal infections caused by groin, perineum, buttocks and other parts of the superficial skin damage. 2. Symptoms are different: acute eczema on the buttocks will cause local small blisters, papules, itching, and acute phase has obvious exudation tendency; chronic eczema will cause dry skin hypertrophy, scaling and other symptoms; tinea cruris, will cause the skin ring-shaped erythema, desquamation, itching and other manifestations. 3. Different treatment measures: acute eczema on the buttocks, acute eczema using zinc oxide ointment, chronic eczema can be used externally fluoride acetate easy cream, dexamethasone ointment and other glucocorticosteroid medications; ringworm, the main external use of antifungal medication, such as ketoconazole ointment, terbinafine ointment and so on. There is a need for timely medical treatment of the disease, all drugs should be used under the guidance of a professional doctor, to avoid their own abuse of drugs.