Proctitis is inflammation of the lining of the rectum. It can be a short-term or long-term problem. Many things can cause proctitis. It may be a side effect of medical treatments, such as radiation therapy or antibiotics. Some sexually transmitted infections may also cause proctitis. It may be related to ulcerative colitis or to Crohn's disease. Other causes include bacterial infection, allergies, or injury or nerve problems in the rectum.
Common symptoms include pain or itching in the rectum and a constant or frequent strong need to have a bowel movement. You may have a change in bowel habits; a fever; and mucus, blood, or pus in your stools.
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