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IBS symptoms affect the intestines. The symptoms may come and go.

Normal Anatomy of the Intestines
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Copyright © Nucleus Medical Media, Inc.

Symptoms of IBS range in intensity from mild to severe and include the following:

  • Abdominal cramps
  • Gas
  • Bloating
  • Pain that resolves with a bowel movement
  • Diarrhea
  • Constipation
  • Alternating bouts of diarrhea and constipation
  • Loose stools
  • Urge to move bowels but no stool is passed
  • Urge to move bowels after having a bowel movement
  • Mucus in the stool

If you see blood in the stool, consult your doctor immediately.

Revision Information

  • Reviewer: Daus Mahnke, MD
  • Review Date: 12/2013 -
  • Update Date: 01/15/2013 -
  • American Gastroenterological Association website. Available at: http://www.gastro.org . Accessed March 6, 2006.

  • Fauci AS, Braunwald E, et al. Harrison's Principles of Internal Medicine . 14th ed. New York, NY: The McGraw-Hill Companies; 2000.