Ulcerative colitis is an inflammatory bowel disease in which the inner lining of the large intestine and rectum become inflamed. It is characterized by diarrhea, abdominal pain and blood in the stool.

H. pylori (Heliobacter pylori) is a type of bacteria that infects your stomach. It can damage the tissue in your stomach and the first part of your small intestine (the duodenum). In some cases it can ...