Buttocks refers to the buttocks, on which pimples are painless and itchy can be caused by folliculitis, common warts, epidermal cysts and other factors. 1. folliculitis: buttock folliculitis is mainly caused by bacterial infection and other factors, often in spicy dietary stimulation, low immunity, high temperature environment, skin barrier function impaired conditions such as triggered, the local follicle-centered red pimples, may not be accompanied by pain and itching and other symptoms. 2. common warts: common warts is a benign skin growth caused by human papilloma virus infection, occurring in the buttocks can be shown as a solid pimple-like pimples, the surface of the rougher, may not be accompanied by pain and itching and other symptoms, and occasionally pressure and pain and other manifestations. 3. Epidermoid cysts: epidermoid cysts are benign tumors that occur in the skin, and can occur in the head, face, neck, buttocks and other parts of the body, usually slow-growing, rounded, bulging nodules, may not be pain, itching and other self-conscious symptoms. Buttock pimples do not hurt, itchy, should be timely medical treatment, under the guidance of specialists to actively carry out appropriate treatment, help early relief of uncomfortable symptoms.