Can a mild anal fistula heal on its own?

Mild anal fistulas usually cannot heal on their own. Although symptoms may be mild, the fistula tract has already formed, creating an abnormal passage between the internal and external openings, which is unlikely to close through natural healing. However, with proper care, symptoms can be controlled and disease progression delayed. Definitive treatment, however, still requires medical intervention. Detailed analysis is as follows:

In mild cases, there may only be occasional minor discharge, with little or no noticeable pain or swelling, making the condition easy to overlook. However, the presence of a fistula tract can lead to recurrent infections. Even if symptoms temporarily improve, untreated internal openings continue to trigger inflammation, potentially leading to more complex fistulas over time and increasing treatment difficulty. Therefore, self-resolution should not be expected. Once a mild anal fistula is suspected, prompt medical evaluation is essential. Treatment typically involves minimally invasive surgery to remove the infected tissue and close the fistula tract. Daily management includes maintaining anal hygiene, performing warm water sitz baths after bowel movements, wearing loose and breathable clothing, and avoiding prolonged sitting.

A light, non-irritating diet and regular, smooth bowel movements are also important to minimize irritation to the affected area and support effective treatment and recovery.