The characteristics of abdominal pain caused by colitis generally include intermittent dull pain, and sometimes colicky pain might also occur, although colicky pain is less common. Patients with colitis may experience diarrhea or constipation, or alternating episodes of both. Diagnostically, colitis is primarily identified through colonoscopy, which can reveal congested, edematous, and eroded mucosa of the colon, potential inflammation, possible ulcers, and the formation of granulomas. For treatment, medications for ulcerative colitis, such as mesalazine, can be chosen. (Please use medications under the guidance of a doctor.)