Causes of rectal bleeding include:

  1. Anal cancer
  2. Anal fissure (tear in the skin of the anus)
  3. Angiodysplasia (abnormalities in the blood vessels near the intestines)
  4. Colon cancer
  5. Colon polyps
  6. Chronic constipation
  7. Crohn's disease
  8. Diarrhea
  9. Diverticulosis (a bulging pouch that forms on the wall of the intestine)
  10. Food poisoning
  11. Hemorrhoids
  12. Intussusception (a portion of the intestine slides inside another portion)
  13. Ischemic colitis (colon inflammation caused by reduced blood flow)
  14. Proctitis (inflammation of the rectum)
  15. Pseudomembranous colitis (colon inflammation caused by an infection)
  16. Radiation therapy
  17. Rectal prolapse (part of the rectum protrudes through the anus)
  18. Solitary rectal ulcer syndrome (a sore on the wall of the rectum)
  19. Ulcerative colitis

Causes shown here are commonly associated with this symptom. Work with your doctor or other health care professional for an accurate diagnosis.

Apr. 30, 2011