Itchy butt needs to be treated symptomatically for the cause, if it is ringworm, you can use clotrimazole ointment, terbinafine ointment; if it is eczema, you can use mometasone furoate ointment; if it is contact dermatitis, you can use compound dexamethasone ointment, fluoride acetate ointment and so on. 1. ringworm: fungal infection caused by perineum, perianal, buttocks, groin and other parts of the rash, may cause itchy buttocks symptoms, you can use topical clotrimazole ointment, terbinafine ointment and other antifungal drugs. 2. Eczema: internal and external stimulation of a variety of factors causing inflammatory skin reactions, may cause eczema, resulting in itchy buttocks symptoms, can be used externally mometasone furoate ointment and other drugs. 3. Contact dermatitis: local skin contact with external sensitizers caused by allergic reactions, you can choose to compound dexamethasone ointment, fluoride acetate ointment and other glucocorticoid medication. Itchy buttocks, there may be other reasons, you need to go to the hospital to check, clear cause, specific drugs should be used under the guidance of a professional doctor.