Anal Fistula Specialists in Karol Bagh, Delhi
An anal fistula is an abnormal tunnel that forms between the inside of the anal canal and the skin near the anus, most commonly developing as a complication of …
Health Conditions A–Z
LabDekho500+ Diseases & Conditions Explained
Understand symptoms, causes, treatment options and prevention for hundreds of conditions — written for patients, reviewed for accuracy.
Causes of Anal Fistula
Most commonly develops following an anal abscess, where the infection tracks through tissue and forms a chronic tunnel connecting an infected anal gland to the skin surface. Other causes include inflammatory bowel disease, particularly Crohn's disease, prior anal surgery, radiation therapy, and, less commonly, tuberculosis or other infections. Persistent bacterial contamination within the tract prevents natural closure of the fistula.