According to the Cleveland Clinic, an anal fistula often develops as a complication of an anal abscess, which is an infected wound that drains pus from the anus. The abscess can form a tunnel ...

Fistulas usually develop when anal glands become infected. Your body creates the fistula as a way to drain pus from the infection. Pus-filled anal abscesses that result from infected anal glands ...

Crohn’s disease can cause anal fistulas, which are tunnels that go from your anus to the surface of the skin around your anus. They usually begin as an infection in one of your anal glands and can ...

Perianal abscesses and fistulas are common conditions in pediatric patients that can cause significant discomfort and complications. An abscess is a collection of pus that forms due to infection ...