Ulcerative colitis is an inflammatory bowel disease that can cause rectal bleeding, urgency to have a bowel movement, diarrhea, and other problems. Factors that can influence the symptoms a person will develop include the person's age, how much of the digestive tract is affected, and whether complications occur. Among the tests that a healthcare provider may use to diagnose the condition are blood tests, a stool sample, and a colonoscopy. Treatment options for ulcerative colitis include medications, lifestyle changes, surgery, or a combination of these treatments.