The common causes of buttock pimples are boils, folliculitis, molluscum contagiosum and so on. 1. boils: this disease is often induced by staphylococcus aureus, manifested as hard nodules, pimples, accompanied by redness, swelling, heat and pain, a few days after the center of the soft, fluctuating feeling, the top of the yellowish-white punctate pus embolus and other symptoms. 2. Folliculitis: this disease is mostly caused by bacterial infection, high temperature, sweating, scratching, poor hygiene habits, systemic chronic diseases, organ transplantation and other factors, easy to induce eczema, manifested as red follicular pimples on the skin, pustules in the center within a few days, surrounded by redness and other symptoms. 3. Molluscum contagiosum: This disease is mainly caused by the molluscum contagiosum virus infection, can be transmitted through direct skin contact, sexual transmission and public facilities, etc., to spread. The symptoms are hemispherical papules on the skin, gray or pearly, with a waxy surface, a central umbilical concavity, containing milky white cheese-like material. It is recommended that patients go to the dermatology department of regular hospitals for a clear diagnosis and timely treatment. Usually pay attention to the hygiene and cleanliness of the buttock skin.