A chronic, inflammatory bowel disease that causes inflammation in the digestive tract. Ulcerative colitis is usually only in the innermost lining of the large intestine (colon) and rectum. Forms range from mild to severe. Having ulcerative colitis puts a patient at increased risk of developing colon cancer. Symptoms include rectal bleeding, bloody diarrhoea, abdominal cramps and pain. Treatment includes medication and surgery. Ulcerative colitis (UL-sur-uh-tiv koe-LIE-tis) is an inflammatory bowel disease (IBD) that causes long-lasting inflammation and ulcers (sores) in your digestive tract. Ulcerative colitis affects the innermost lining of your large intestine (colon) and rectum. Symptoms usually develop over time, rather than suddenly. Ulcerative colitis can be debilitating and can sometimes lead to life-threatening complications. While it has no known cure, treatment can greatly reduce signs and symptoms of the disease and even bring about long-term remission. Requires a medical diagnosis Symptoms include rectal bleeding, bloody diarrhoea, abdominal cramps and pain.