Although the internal opening is not high and the length of the fistula is not long, it cannot heal by itself and requires surgery for complete recovery. The fistula is a primary fistula, and the presence of pathogenic bacteria from the internal opening leads to septic infection of the fistula, which often results in secondary symptoms such as dampness, discharge, and itching around the anus. The surgery for low-level subcutaneous fistula is relatively simple and can be done under local anesthesia or lumbar anesthesia. It is not very long after the surgery, and it takes about a month to heal completely after the surgery with daily cleaning and medication changes. The location of the fistula is not very long and the incision is not particularly long or short, so it is not particularly painful. If you want a complete cure, we recommend surgery as soon as possible.