At a glance
One of the most common questions after fistulotomy is how long the wound takes to heal. The honest answer is: longer than most people expect. Fistulotomy wounds are left open deliberately and heal by secondary intention, which means from the bottom up. This is slower than a stitched wound but is the safest approach for this type of surgery.
This guide covers the typical healing timeline, what each stage looks like, and what factors influence how quickly the wound closes.
The typical timeline
Weeks one to two: the acute phase
- The wound is at its largest — it is an open, shallow channel where the fistula tract was laid open
- Drainage is common — blood-tinged or clear fluid is normal
- Pain is managed with medication and sitz baths
- The wound needs regular cleaning and possibly packing
- Daily care feels like a significant part of the day
Weeks three to six: the active healing phase
- The wound begins to fill in from the bottom with granulation tissue (pink, healthy-looking tissue)
- The edges start to draw inward
- Drainage decreases gradually
- Pain continues to ease
- Wound care becomes less intensive
- This is the phase where many people return to normal activities
Weeks six to twelve: the closing phase
- The wound becomes noticeably shallower and smaller
- Drainage is minimal or has stopped
- The surface skin grows across the remaining open area
- Discomfort is mild or absent
- Follow-up appointments confirm progress
Beyond twelve weeks
Some wounds, particularly deeper ones, take longer than twelve weeks. This is frustrating but not necessarily abnormal. As long as the wound is making steady progress — even if slow — healing is on track.
What normal healing looks like
Healthy signs
- Pink or red tissue at the base — this is granulation tissue and is a sign of active healing
- Wound getting gradually smaller and shallower — measurable progress over weeks
- Clear or slightly blood-tinged drainage — normal in the early to middle phases
- Decreasing pain — the wound should become less uncomfortable over time
Concerning signs
- Wound that stops progressing or gets larger — may indicate a problem
- Thick, foul-smelling discharge — could indicate infection
- Increasing pain — should be decreasing, not increasing
- The wound surface closing while the depth remains — premature closure can trap infection
- Recurrence of symptoms that feel like the original fistula
Factors that affect healing time
Things that support faster healing
- Good wound care — keeping the area clean, following your team’s instructions
- Soft stools — preventing hard stools from traumatising the wound
- Adequate nutrition — protein and vitamins support tissue repair
- Not smoking — smoking significantly impairs wound healing
- Following activity guidance — not overdoing it in the early weeks
Things that slow healing
- Constipation — hard stools can damage healing tissue
- Smoking — one of the most significant modifiable risk factors
- Diabetes — can impair wound healing
- Poor wound care — not cleaning or packing as recommended
- Premature return to strenuous activity — can disrupt healing tissue
The emotional side of slow healing
Fistulotomy wound healing is a test of patience. People describe:
- Frustration with the daily wound care routine
- Anxiety at each follow-up appointment about whether the wound is progressing
- Comparing their timeline to others and worrying when theirs is slower
- Fatigue from months of ongoing wound management
These feelings are normal. The wound will heal, but it does so on its own timeline, and that timeline is measured in weeks to months, not days.
When to seek advice
Contact your surgical team if:
- The wound has not shown any progress in two or more weeks
- You notice signs of infection (increased pain, foul discharge, fever)
- The wound appears to be closing on the surface while still deep
- You are unsure whether what you are seeing is normal
- You have any concerns at all — your team would rather check than miss something