Some patients will have a milder throbbing pain in the anus of varying duration for about 2-3 weeks after having surgery for hemorrhoids or anal fistula. Patients fear, thought the disease recurred, in fact, this is a relatively normal postoperative reaction. 2-3 weeks after surgery is the late stage of wound tissue repair, connective tissue scar is basically formed, scar tissue under the influence of certain factors, irregular movement or scar tissue and the surrounding muscle tissue activities are not coordinated, affecting the adjacent nerve tissue, and thus the emergence of a short period of twitching pain symptoms. With the healing of the wound, this phenomenon will gradually disappear, so there is no need to deliberately treat.