The causes of pain and swelling in the buttocks are different depending on the area. Common first is the perianal distension, perianal distension is usually the cause of hemorrhoids or perianal abscess, need to anorectal physician for diagnosis and examination. Secondly, the superficial swelling and pain of the soft tissues of the buttocks, to observe the local skin of the buttocks, there is no redness, swelling, heat, pain, there is no inflammation of the hair follicles, usually produced by folliculitis. Then there is the skin, muscle or the back of the buttock pain, common causes such as sciatica or lumbar disc herniation, can cause this symptom, but lumbar disc herniation is often accompanied by radiating pain in the lower limbs, simple buttock pain, so if this symptom occurs, you need to find a physician to diagnose. Then there is pelvic organ distension, especially for women, gynecological adnexitis or pelvic inflammatory disease, can also cause reflexive hip distension and pain, the common causes are also these. If the effect of rest and conservative treatment is not satisfactory, it is necessary to go to the hospital for examination.