what causes pain in the left buttock
Diseases and conditions causing buttock pain. Buttock pain can also be caused by diseases, disorders and other conditions including: Anal abscess (infected, pus-filled cavity near the anus). Anal fissure (small, painful tear in the anus). Arthritis of the hip. Bone cancer of the pelvis. Bursitis (inflammation of a bursa sac that cushions a joint).
Buttock pain can also develop because of other injuries as well as certain diseases and disorders within the buttocks or in other related areas, such as the pelvis, tailbone (coccyx), hips, upper legs, and lower back.