Causes
- Coagulopathy — specifically a bleeding diathesis
- Colitis
- ischaemic colitis
- ulcerative colitis
- infectious colitis
- E. coli O157:H7
- Shigella
- Salmonella
- Campylobacter jejuni
- Hemorrhoids
- Angiodysplasia
- Neoplasm — cancer
- Diverticular disease — diverticulosis, diverticulitis
The following are possible diagnosis of a LGIB:
- Hemorrhoids are a common occurrence; however, rarely they have been known to rupture and result in a massive hemorrhage. Causes for this include frequent or chronic constipation, straining to have a bowel movement, diets low in fiber, and pregnancy. It may present with small amounts of bright red bleeding.
- Anal fissures
- Rectal foreign bodies
- Ulcerative colitis
- Crohn's disease
- Pseudomembranous colitis
- Infectious diarrhea
- Radiation colitis
- Diverticulosis
- Mesenteric ischemia
- colonic polyps
- colon cancer
Read more about this topic: Lower Gastrointestinal Bleeding