NCIt definition : An inflammatory bowel disease involving the mucosal surface of the large intestine
and rectum. It may present with an acute or slow onset and follows an intermittent
or continuous course. Signs and symptoms include abdominal pain, diarrhea, fever,
weight loss, and intestinal hemorrhage.;
Alternative definition : NICHD: A chronic inflammatory disease affecting the mucosal surface of the colon and
rectum.; NCI-GLOSS: Chronic inflammation of the colon that produces ulcers in its lining. This
condition is marked by abdominal pain, cramps, and loose discharges of pus, blood,
and mucus from the bowel.;