Mucus in stool: Is it a concern?

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    Michael F. Picco, M.D.

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Question

Mucus in stool: Is it a concern?

What causes mucus in stool? Is this a concern?

Answer

from Michael F. Picco, M.D.

A small amount of mucus in stool is usually nothing to worry about. Stool normally contains a small amount of mucus — a jelly-like substance that your intestines make to keep the lining of your colon moist and lubricated.

But you should talk to your doctor if you notice an increased amount of mucus in stool — particularly if it begins happening regularly or if it's accompanied by bleeding or a change in bowel habits.

Mucus in stool can occur with a variety of intestinal infections that cause severe diarrhea. In more serious conditions — Crohn's disease, ulcerative colitis and even cancer — mucus in stool may be bloody or accompanied by abdominal pain.

References
  1. Fischbach FT, et al. Stool analysis. In: A Manual of Laboratory and Diagnostic Tests. 8th ed. Philadelphia, Pa.: Walters Kluwer Health, Lippincott Williams & Wilkins; 2009:292.
  2. Stephens I, et al. Inflammatory enteritis. Long SS, et al. Principles and Practice of Pediatric Infectious Diseases. 3rd ed. Philadelphia, Pa.: Churchill Livingstone; 2008. http://www.mdconsult.com/das/book/body/175682887-3/930673791/1679/65.html#4-u1.0-B978-0-443-06687-0..50064-3--cesec2_1362. Accessed Dec. 17, 2009.
  3. Anderson CF (expert opinion). Mayo Clinic, Rochester, Minn. Feb. 18, 2010.
  4. Picco MF (expert opinion). Mayo Clinic, Rochester, Minn. Feb. 18, 2010.
AN01296 March 11, 2010

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