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, or fistula, from the anus to the surrounding skin. This condition commonly causes symptoms such as anal pain, swelling, and redness. The infection and resulting fistula create a continuous channel that can be both uncomfortable and concerning. Treatment typically involves surgery to remove the fistula and address the underlying infection. This surgical intervention helps to alleviate symptoms and promote healing. Regular follow-ups and proper hygiene are essential to prevent recurrence and ensure recovery.