How long does it take to determine whether an anal fistula has formed after perianal abscess surgery

Perianal abscess after surgery life care is more important, its recovery time about 20-40 days, if the dressing time found that the wound has not healed for a long time to consider whether it is the formation of anal fistula. Usually must pay attention to the local wound cleanliness, if there is abnormal time must be actively handled.