Healing times vary widely with what you actually have, what's been done about it, and how consistent you are with the basics. Here are realistic windows.

About this guide

Written by the GutCareHub editorial team and reviewed against current colorectal society guidance (ASCRS, BSG, NICE) and recent peer-reviewed literature. Last reviewed: 2026-05-10. We update content as evidence evolves. About our process →

Acute anal fissure (no surgery)

4–6 weeks with consistent conservative care: stool softening, sitz baths, topical numbing as needed. Pain typically improves substantially by week 2; visual healing lags behind symptom improvement.

Chronic fissure (no surgery)

Chronic fissures rarely heal with conservative care alone. Adding prescription topicals (GTN, diltiazem) gives roughly 50–70% healing in 8–12 weeks. If they fail, Botox or LIS becomes the next step.

After lateral internal sphincterotomy (LIS)

The cut itself heals in 2–3 weeks. Pain control needed mostly the first 5–7 days. Most people return to desk work within a week. Full healing of the original fissure typically by 4–6 weeks. Mild flatus or seepage during healing is common and usually resolves; persistent incontinence is uncommon (under 5%) but worth taking seriously if present.

After fistulotomy

The wound is intentionally left open and heals from the bottom up — that takes 4–8 weeks. The first 2 weeks are the most uncomfortable; daily sitz baths and good toilet habits make a substantial difference. Discharge and minor bleeding from the wound are normal during this period.

After flap / LIFT / VAAFT

Sphincter-sparing procedures heal under closed wounds and take 4–6 weeks. Recovery is usually faster than fistulotomy because the wound is sutured. Recurrence risk is higher, so follow-up matters.

What affects healing speed

  • Stool quality. Hard stool delays healing; loose stool keeps the wound irritated. Aim for soft, formed.
  • Smoking. Reduces blood flow to the area, measurably delays healing.
  • Diabetes. Slower wound healing in general.
  • Crohn's disease. Major delays unless disease activity is controlled.
  • Steroid medications. Slow tissue healing.
  • Consistency. Doing sitz baths twice a day for two weeks then giving up is one of the most common reasons for stalled healing.

Signs you're on track

  • Pain getting noticeably better week-to-week, even if not day-to-day
  • Bowel movements becoming more comfortable
  • Less bleeding after stool
  • Less drainage from a healing fistulotomy wound

Signs you're not

Pain getting worse, new swelling, fever, foul-smelling discharge, splitting wound — call your surgeon. Don't sit on it.