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Digestive system
Inflatable artificial sphincter
Inflatable artificial sphincter


Bowel incontinence

Definition:

Bowel incontinence is the loss of bowel control, resulting in involuntary passage of feces. This can range from an occasional leakage of stool with the passage of gas to a complete loss of control of bowel movements.

Urinary incontinence, a separate topic, is the inability to control the passage of urine.



Alternative Names:
Uncontrollable passage of feces; Loss of bowel control; Fecal incontinence; Incontinence - bowel

Considerations:

Among people over the age of 65, women more frequently experience bowel incontinence, with 13 out of every 1,000 women reporting loss of bowel control.

The most common cause of bowel incontinence, ironically, is constipation. Constipation causes the muscles of the anus and intestines to stretch and weaken. The weakened muscles will prevent the rectal sphincter from tightly closing thus resulting in leakage of stool. Weakened intestinal muscles will further slow down the transit time of the bowels, making it difficult to pass stools and further worsening the constipation.

Chronic stretching of the anal and intestinal muscles can also make the nerves of the anus and rectum less responsive to the presence of stool in the rectum.

The ability to hold stool and maintain continence requires normal function of the rectum, anus, and the nervous system. Additionally, the person must possess the physical and psychological ability to recognize and appropriately respond to the urge to defecate.

Problems with incontinence should be reported to the health care provider. Incontinence is not a hopeless situation. Proper treatment can help the majority of people, and often the problem can be eliminated altogether.



Common Causes:
  • chronic constipation or impacted stool in the rectum leading to diarrhea and stool leakage around the impacted stool (see encopresis)
  • severe diarrhea that overwhelms the ability to control passage of stool
  • In women, injury to the anal sphincter muscles due to childbirth
  • stress of unfamiliar environment
  • decreased awareness of sensation of bowel fullness
  • nerve or muscle damage (from stroke, trauma, tumor, or radiation)
  • emotional disturbance (psychological)
  • gynecological, prostate, or rectal surgery
  • severe hemorrhoids or rectal prolapse
  • colectomy or bowel resection surgery
  • chronic laxative abuse



Review Date: 11/10/2004
Reviewed By: Christian Stone, M.D., Division of Gastroenterology, Washington University in St. Louis School of Medicine, St. Louis, MO. Review provided by VeriMed Healthcare Network.

The information provided herein should not be used during any medical emergency or for the diagnosis or treatment of any medical condition. A licensed physician should be consulted for diagnosis and treatment of any and all medical conditions. Call 911 for all medical emergencies. Links to other sites are provided for information only -- they do not constitute endorsements of those other sites. Copyright 2004 A.D.A.M., Inc. Any duplication or distribution of the information contained herein is strictly prohibited.

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