Ulcerative colitis and Crohn's disease are the two types of irritable bowel syndrome (IBS). Both ulcerative colitis and Crohn's disease have similarities, and often it is difficult to distinguish between the two. As a general rule, ulcerative colitis is an inflammation limited to the wall of the colon (bowel). Its symptoms include abdominal cramps, fever, and bloody diarrhea. Similar symptoms, generally affecting the ileum (a portion of the small intestine) and without blood in the stools, are generally suggestive of Crohn's disease.
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