what is inflammatory colitis
Colitis facts. 1  Colitis is inflammation of the inner lining of the colon. 2  It may cause abdominal pain and diarrhea with or without blood. 3  Fever may be present. Colitis is inflammation of the inner lining of the colon. 2  It may cause abdominal pain and diarrhea with or without blood. 3  Fever may be present. 4  There are numerous causes of colitis including infection, inflammatory bowel disease, ischemic, and microscopic colitis.