Butt ulcers can be caused by allergies, eczema, pressure sores, etc. Dexamethasone cream, tacrolimus ointment, mupirocin ointment, etc. can be used. There are many causes of buttock ulcers, the common ones are allergy, eczema and bedsores. Allergy patients can use dexamethasone cream for treatment, eczema can be treated with tacrolimus ointment, and pressure sores can be sterilized with povidone-iodine and then mupirocin ointment can be used. Daily to keep the buttocks area skin clean and dry, try to wear cotton underwear, so as to avoid excessive friction on the skin, you can bandage the wound locally, do a good job of skin care, the use of medication please follow the doctor’s instructions.