Skip directly to search Skip directly to A to Z list Skip directly to page options Skip directly to site content

Inflammatory Bowel Disease (IBD) is a broad term that describes conditions characterized by chronic inflammation of the gastrointestinal tract. The two most common inflammatory bowel diseases are ulcerative colitis and Crohn’s disease. Inflammation affects the entire digestive tract in Crohn’s disease and only the large intestine (also called the colon) in ulcerative colitis. Both illnesses involved an abnormal response to the body’s immune system.