Definition of Fecal impaction:

A fecal impaction is a large mass of dry, hard stool that can develop in the rectum due to chronic constipation. This mass may be so hard that it cannot come out of the body. Watery stool from higher in the bowel may move around the mass and leak out, causing soiling or diarrhea.

Causes, incidence, and risk factors:

Certain people are at greater risk for developing chronic constipation, which can lead to fecal impaction.

Persons at risk for this condition include those who:

• Have limited ability to move such as bedridden patients, or persons with severe disease of the nervous system
• Take certain drugs, including:
  • Anticholinergics, which affect the interaction between certain nerves and muscles
  • Antidiarrhea medications
  • Methadone maintenance treatment for drug addiction
  • Narcotic pain medication