Ulcerative colitis is an inflammatory bowel disease that causes long-term inflammation and ulcers in the digestive tract.
Ulcerative colitis affects the innermost lining of the large intestine (colon) and rectum. Symptoms usually do not occur suddenly but develop over time.
Ulcerative colitis can be debilitating and can sometimes lead to life-threatening complications. Treatment can greatly reduce the signs and symptoms of the disease and even lead to long-term remission.