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Stool is watery and loose

Authoring team

A watery, loose stool suggests colonic or systemic pathology. Stool culture and microscopy are required.

If these fail to identify the cause, consider:

  • sigmoidoscopy and rectal biopsy
  • colonoscopy and multiple biopsies - to look for:
    • infective right-sided colitis
    • inflammatory bowel disease
    • microscopic colitis

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