An anal fistula is like a small tunnel. It forms between the inside of the anal canal and the skin near the anus. Most fistulas start after an anal abscess does not heal fully. A small channel is left behind, and infection keeps coming out from it.
Anal fistulas can be frustrating, painful, and often recurrent if not treated correctly. But what many people don’t realize is that not all fistulas are the same.
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