Final answer:
Patients with IBS mainly experience symptoms such as hypermotility and abdominal pain without the chronic inflammation and other complications seen in inflammatory bowel diseases like Crohn's disease and ulcerative colitis.
Step-by-step explanation:
Characteristics of the intestine of patients with IBS include Hypermotility and abdominal pain. Patients with Inflammatory Bowel Disease (IBD), which includes conditions such as Crohn's disease and ulcerative colitis, often experience symptoms such as abdominal pain, diarrhea, weight loss, and occasionally fever. These conditions are marked by inflammation of the intestine, with Crohn's disease potentially affecting any part of the gastrointestinal (GI) tract from mouth to anus, and ulcerative colitis mainly affecting the colon and rectum. Unlike IBD, Intestinal Bowel Syndrome (IBS) does not typically involve chronic inflammation or thickening of the bowel wall, nor does it cause atrophy of intestinal villi as seen in diseases like celiac disease.