Faecal incontinence implies loss of voluntary control of passage of faeces from the anus. Any disease process that interferes with rectal sensation or affects function of the anorectal musculature may produce incontinence. However, incontinence may still occur with normal sphincters and pelvic floor, for example in severe diarrhoea.

Causes

Normal sphincters and pelvic floor

  • Severe diarrhoea, e.g. infection, irritable bowel syndrome, inflammatory bowel disease

  • Faecal impaction (‘overflow’ diarrhoea)

Abnormal sphincters and/or pelvic floor

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