Important It is possible that the main title of the report Colitis, Ulcerative is not the name you expected. Please check the synonyms listing to find the alternate name(s) and disorder subdivision(s) covered by this report. ...
The cause of ulcerative colitis is unknown. Studies suggest that this and other inflammatory bowel diseases may result from an abnormal response by the body's immune system to normal intestinal bacteria.
The course of ulcerative colitis varies greatly from one person to another. Some people may have only mild symptoms, while others may have severe symptoms or complications that, in unusual cases, may be life-threatening.
Ulcerative colitis can be relatively easy to diagnose because it normally affects only the colon and rectum and usually causes an obvious change in daily bowel habits, such as frequent stools containing blood or mucus.