What is diverticular bleeding?
Diverticular bleeding occurs when pouches (diverticula) that have developed in the wall of the large intestine (colon) bleed. If you have these pouches, you have a condition called diverticulosis. Diverticular bleeding causes a large amount of blood to appear in your stool. Bleeding starts suddenly and usually stops on its own. Abdominal pain usually does not occur with the bleeding. If you have a large amount of blood in your stool, see a doctor right away. It is possible, but not common, to quickly lose so much blood that you become lightheaded or weak.
