At a glance
Fistulotomy wounds heal from the inside out, and that process takes time. Many people find themselves weeks into recovery, looking at a wound that still seems open, and wondering whether something is wrong. This guide covers what a normal healing trajectory looks like, what genuinely slow healing looks like, and when it is time to go back to your surgeon.
Most of the time, a fistulotomy wound that seems slow is simply following the normal — if frustratingly gradual — course. But sometimes slow healing is a signal that something needs attention.
What normal fistulotomy healing looks like
Fistulotomy wounds are intentionally left open. They are not stitched closed. This means they heal by secondary intention — the tissue fills in from the bottom up and the edges gradually draw together. It is a slower process than a sutured wound, and it looks different at every stage.
Weeks 1 to 2
- The wound is open and actively draining. This is expected.
- Pain is often most significant during this period, especially around bowel movements.
- The wound may look raw and larger than expected. This is normal.
- Gauze pads, sitz baths, and keeping the area clean are the main tasks.
Weeks 3 to 4
- Drainage typically decreases. The fluid becomes clearer and less frequent.
- The wound starts to look smaller — the edges are drawing in.
- Pain is usually less intense, though bowel movements may still cause discomfort.
- Many people notice the wound bed looking pink and healthy — this is granulation tissue, which is a good sign.
Weeks 5 to 8
- The wound continues to shrink. Progress may feel slow from day to day but is visible week to week.
- Drainage is minimal or has stopped.
- Most people are able to return to normal activities during this period.
- The wound surface may close while the deeper tissue continues to fill in beneath.
Weeks 8 to 12 and beyond
- Most fistulotomy wounds are fully or nearly fully healed by this point.
- Some deeper wounds take longer. A wound that is still making steady progress at 10 or 12 weeks is not necessarily a problem.
- The healed area may feel different — firmer, slightly raised, or with altered sensation. This is common.
When healing is genuinely slow
A wound that is healing slowly but still making progress is different from a wound that has stalled. The distinction matters.
Signs of normal slow healing
- The wound is getting smaller, just slowly
- Drainage is decreasing over time
- Pain is gradually improving
- The wound bed looks pink and clean
- Each follow-up visit shows some progress, even if small
Signs that something may need attention
- The wound has stopped getting smaller. If there is no visible change over a two-week period, this is worth discussing with your surgeon.
- Drainage has changed character. An increase in drainage, especially if it becomes thick, discoloured, or foul-smelling, can indicate infection or a new tract.
- Pain is increasing rather than decreasing. Post-fistulotomy pain should follow a general downward trend. Pain that reverses course warrants assessment.
- The wound looks different. New redness, swelling, or warmth around the wound edges — as opposed to the normal pink of healing tissue — can indicate infection.
- A new opening has appeared near the wound. This may suggest a recurrent or additional fistula tract.
Why some fistulotomy wounds heal slowly
Several factors can contribute to slower healing. Understanding them may help you have a more productive conversation with your surgeon.
Wound size and depth
Larger and deeper fistulotomy wounds take longer to heal. This is straightforward — there is more tissue to fill in. A complex fistula that required a more extensive procedure will have a longer healing timeline than a simple, shallow one.
Ongoing infection
If the original infection was not fully cleared, or if a new infection develops, healing will stall or reverse. Signs include increased pain, swelling, warmth, fever, and changes in discharge.
Underlying tract not fully addressed
Sometimes a fistula has branching tracts that are not visible during the initial procedure. If a tract remains, the wound may appear to heal on the surface while continuing to drain or re-form underneath. This is one of the more common reasons for non-healing.
General health factors
Conditions that affect wound healing generally — such as diabetes, immunosuppression, poor nutrition, or smoking — can slow fistulotomy wound healing specifically. If you have any of these factors, mention them to your surgical team if you have not already.
Bowel movement trauma
Repeated passage of hard stools across the healing wound can disrupt the tissue and slow progress. Keeping stools soft during the healing period is one of the most commonly emphasised pieces of advice from both surgeons and people who have been through this recovery.
What to do if you are worried
Step 1: check the trajectory, not the snapshot
A wound that looks concerning on any given day may still be on track. The question is not “does this wound look healed?” but “is this wound making progress compared to last week?” Taking photos at regular intervals can help you track changes that are too gradual to notice day to day.
Step 2: contact your surgeon
If your wound has stalled, changed character, or you are experiencing new or increased symptoms, the right step is to contact your surgical team. This is not overreacting — it is what follow-up care is for. Specifically, reach out if:
- No visible progress for more than two weeks
- New or worsening pain
- Changes in discharge (volume, colour, smell)
- Fever or feeling generally unwell
- A new opening near the wound
Step 3: ask specific questions
When you see your surgeon, useful questions include:
- Is my wound healing at a normal pace for its size?
- Do you see healthy granulation tissue?
- Is there any sign of a remaining tract?
- Is there anything I should change about my wound care?
- At what point would you consider further intervention?
What people commonly try to support healing
These are patterns people frequently describe. They are not treatment recommendations.
- Sitz baths — warm water, two to three times daily. Consistently described as the single most helpful thing for wound comfort and cleanliness.
- Stool softeners — keeping bowel movements soft to avoid traumatising the healing wound.
- High-fiber diet and adequate water — supporting soft, regular stools from the dietary side.
- Wound hygiene — gentle cleaning after bowel movements, typically with water rather than wiping.
- Patience — people who have been through this consistently emphasise that fistulotomy healing takes longer than expected, and that slow progress is still progress.
The emotional side of slow healing
Waiting for a wound to heal in a sensitive area is exhausting. People commonly describe:
- Frustration at the pace of healing
- Anxiety every time they look at the wound
- Comparing their timeline to others and feeling behind
- Fear that slow healing means the procedure failed
- Difficulty explaining to work or family why recovery is taking so long
These feelings are normal. Healing from a fistulotomy is a marathon, not a sprint. If the emotional weight of the recovery is becoming difficult to manage, that is worth mentioning to your doctor as well.
When slow healing becomes non-healing
In some cases, a wound that is genuinely not healing may require further intervention. This is a decision for your surgical team and depends on the specific cause.
Possible next steps your surgeon may consider include:
- Examination under anaesthesia to check for remaining tracts
- Imaging to assess the wound and surrounding tissue
- Adjustments to wound care approach
- Further surgical intervention if needed
The important thing is that non-healing fistulotomy wounds have options. If your wound is stuck, that is a reason to go back to your surgeon — not a reason to assume the worst.