Inflammatory bowel disease (IBD) is a group of inflammatory conditions of both the large and small intestine. The major types of IBD are Crohn’s disease (CD) and ulcerative colitis (UC). CD is also known as granulomatous colitis, regional enteritis, and i leitis. It is an inflammatory disease that may affect any part of the gastrointestinal tract from the mouth to the anus, causing a wide variety of symptoms. Because the symptoms of CD are similar to other intestinal disorders, such as irritable bowel syndrome and UC, it can be difficult to diagnose. In CD, all layers of the intestine may be involved, and normal healthy bowel can be found between sections of diseased bowel.