Whether swelling and pain after anal fistula surgery is normal or not depends on the specific condition, and there are normal and abnormal conditions that cannot be simply summarized as follows.
Anal fistula surgery requires cutting or removing the infected granulomatous tube that repeatedly ulcerates around the anus, which can cause some damage to the surrounding tissues. If, after anal fistula surgery, the scar formed by the incision is flat, there is no yellow inflammatory secretion or white purulent secretion oozing out, and there is only vague swelling and pain, it is possible that the local tissues are being rebuilt due to this. This is a normal phenomenon.
If there is swelling and pain after anal fistula surgery, there is a lot of local exudate, accompanied by itching, redness, swelling, ulceration and other symptoms, some patients may also have fever. This is usually caused by wound infection or incomplete surgical removal of lesions, etc., not a normal phenomenon.
If there is swelling and pain after anal fistula surgery, the cause must be identified by a medical professional.