Buttock eczema, that is, perianal eczema, refers to the eczema that occurs in the skin around the anus, manifested as buttocks and perianal scattered erythema, in the erythema on the surface of the red pimples can be appeared in the size of the bean grain, and part of the pimples surface ulceration, accompanied by oozing, revealing vesicles, and often itching sensation is intense. Usually acute perianal eczema onset is more acute, and the development is also more rapid, with intense itching, mainly manifested as primary and polymorphic rashes, initially in the erythema on the basis of red papules the size of peas, part of the papule surface ulceration accompanied by oozing, vesicles and other manifestations, if there are secondary infections can also form pustules, pus, and so on. Eczema can cause obvious itching symptoms. At this time, you should avoid scratching with your hands, which will cause the itching symptoms to become more serious. At the same time also need to pay attention to local cleanliness and hygiene, change clothes and underwear. In the treatment of oral anti-allergic drugs as prescribed by the doctor, such as diclofenac tadine tablets, topical dexamethasone ointment and so on to apply, inhibit the immune-inflammatory response. If there is perianal eczema, it is recommended to go to the hospital in time, under the guidance of the doctor.