Hemorrhoids committed around the buttocks are painful, usually with dry stool, hemorrhoid protrusion, inflammation and infection and other factors. 1. dry stool: hemorrhoids flare up again, easy to cause constipation, resulting in dry stool, stool discharge, the anus repeatedly stimulated easy to cause anal fissure, so there will be obvious pain around the anus. 2. Hemorrhoidal prolapse: If the hemorrhoids are more serious, there are hemorrhoidal nuclei protruding, can not be self-contained, resulting in the anal veins in a varicose state, bruising and edema pressure increases, will cause pain around the anus, and will be accompanied by a small amount of bleeding. 3. Inflammatory infection: If hemorrhoids recurring episodes, bleeding stools, increased anal secretions, if you do not pay attention to local hygiene, easy to infected inflammation, and inflammatory cells repeatedly stimulate the anal tissues will produce an inflammatory reaction, resulting in anal pain, itching and other symptoms. Hemorrhoid attack pain around the buttocks, in addition to the above factors, but also may be a combination of anal cryptitis, perianal abscess, anal fissure and other diseases, it is recommended that the patient promptly to the hospital for examination, to clarify the cause of the disease, under the guidance of a professional doctor to give standardized treatment, to avoid delays in aggravation of the condition.