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

Normal Anatomy of the Intestines

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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.