The document discusses inflammatory bowel disease (IBD), specifically ulcerative colitis (UC) and Crohn's disease. It describes the main differences between UC and Crohn's, including that UC only affects the colon and rectum while Crohn's can affect any part of the gastrointestinal tract. The document provides details on the symptoms, diagnosis, classification, complications, and treatment of UC. Surgical management is discussed as an option when medical treatment is not effective or complications arise.