After surgery for a perianal abscess, due to the presence of a local wound and the significant discharge from the wound in the early postoperative period, combined with the potential fall of ligatures or elastic bands at the area, a hospital stay of approximately two weeks is required. For severe cases or those with deeper abscess cavities, a hospital stay of three weeks or even a month might be necessary.

The main purpose of the hospital stay post-surgery is to monitor for any major bleeding from the wound, and to facilitate dressing changes. Postoperative dressing changes for a perianal abscess wound are crucial for recovery, as only thorough daily disinfection and dressing changes can ensure uniform granulation and growth of local tissues, prevent the enclosure of pus within the local cavity leading to pseudohealing or reinfection, and thus affect the treatment outcome of the surgery. Approximately one month after surgery, regular follow-up visits are required to monitor the healing of the local wound.