During the acute phase of a perianal abscess, if rubber band ligation surgery is performed, the duration of the rubber band falling off generally depends on the location of the lesion. For superficial local perianal abscesses, the rubber band typically falls off within one to ten days. For high-position complex perianal abscesses or those accompanied by anal fistulas, the falling off of the rubber band might take about ten days. In some cases where the rubber band falls off slowly, it may require a doctor's dressing change and assistance to weaken or detach the local rubber band. Do not pull off the rubber band yourself to avoid injuring the local sphincter, which could lead to decreased or abnormal tightness around the anus.