<unk>  is a group of<unk>  conditions of the large intestine and, in some cases, the small intestine. It should not be confused with IBS, irritable bowel syndrome, which is less severe.
Inflammatory bowel disease
Crohn's disease
Irritable bowel syndrome
Allergic colitis
Ulcerative colitis
Drug-induced colitis
Chemical colitis
Microscopic colitis