This site is intended for healthcare professionals

Go to /sign-in page

You can view 5 more pages before signing in

Anal fistula

Last reviewed dd mmm yyyy. Last edited dd mmm yyyy

Authoring team

An anal fistula is an abnormal communication between two epithelial surfaces - the perianal skin and the anal or rectal lumen (1).

  • this abnormal tract is lined with granulation tissue
  • it may harbour chronic infection resulting in continuous or intermittent discharge through the external opening on to the skin
  • soiling of underwear and skin irritation may be seen in severe cases due to faecal material passing through the tract (1)

In England, incidence of anal fistula is 18.4 per100,000/year. More common in men (twicw as likely to be affected) with peak around 40 years of age (1).

Fistulae may be complex, with several openings onto the perianal skin (2).


Related pages

Create an account to add page annotations

Annotations allow you to add information to this page that would be handy to have on hand during a consultation. E.g. a website or number. This information will always show when you visit this page.

The content herein is provided for informational purposes and does not replace the need to apply professional clinical judgement when diagnosing or treating any medical condition. A licensed medical practitioner should be consulted for diagnosis and treatment of any and all medical conditions.


Copyright 2024 Oxbridge Solutions Limited, a subsidiary of OmniaMed Communications Limited. All rights reserved. Any distribution or duplication of the information contained herein is strictly prohibited. Oxbridge Solutions receives funding from advertising but maintains editorial independence.