At a glance
Anal fissure treatment follows a general pathway from least invasive to most invasive. Understanding this pathway helps you know where you are, what the options ahead look like, and what questions to ask your clinician.
The treatment pathway
Step 1: Conservative care
What it involves: Dietary changes (fibre, hydration), stool softeners, sitz baths, good toilet posture.
Who it is for: Everyone with a fissure. This is the foundation regardless of what other treatments are added.
Success rate: High for acute fissures (most heal within 6 to 8 weeks). Lower for chronic fissures used alone.
What people describe: The routine takes discipline, but it works for many. The challenge is consistency over weeks.
Step 2: Topical relaxants
What it involves: Prescribed cream or ointment (GTN or diltiazem) applied to the anal area several times daily.
Who it is for: Fissures that are not healing with conservative care alone, or chronic fissures at first presentation.
Success rate: Approximately 50 to 70 percent when combined with conservative care.
What people describe: Side effects (headache with GTN, sometimes local irritation) are common but usually manageable. The treatment requires 6 to 8 weeks to assess effectiveness.
Step 3: Botox injection
What it involves: Injection of botulinum toxin into the internal sphincter muscle, typically done as a day procedure under sedation.
Who it is for: Fissures that have not healed with topical treatment. People who want a less invasive option before considering surgery.
Success rate: Approximately 60 to 80 percent, though some studies report lower. Some people need a second injection.
What people describe: The procedure is quick. The waiting period to see if it works is the hardest part. Results are temporary — the botox wears off after 2 to 3 months, during which time the fissure needs to heal.
Step 4: LIS surgery
What it involves: Lateral internal sphincterotomy — a small, deliberate cut in the internal sphincter muscle to permanently reduce spasm.
Who it is for: Chronic fissures that have not responded to conservative care, topical treatment, or botox. People with severe symptoms who want the highest chance of definitive resolution.
Success rate: Approximately 90 to 95 percent.
What people describe: The decision is difficult due to concerns about continence risk (small but real). Most people who have LIS describe it as the decision that finally resolved their fissure.
Step 5: Alternative surgical approaches
What it involves: Fissurectomy (removing the chronic fissure tissue), fissurectomy with botox, advancement flap.
Who it is for: People for whom LIS is not appropriate (higher continence risk) or who prefer an approach that does not involve cutting the sphincter.
Success rate: Varies by procedure. Generally lower than LIS but useful in specific situations.
Making the decision
The right treatment for you depends on:
- Where you are in the pathway — have you given each step an adequate trial?
- Severity of symptoms — are they manageable or severely impacting your life?
- Duration — how long has the fissure been present?
- Individual risk factors — age, sex, previous pregnancies, sphincter function
- Personal values — some people prioritise avoiding surgery; others want the most definitive solution
There is no single right answer. The treatment pathway exists to move from least invasive to most invasive, giving your body every opportunity to heal before committing to a procedure.
Questions for your clinician
- Where am I in the treatment pathway?
- Have I given the current approach enough time?
- What are the realistic success rates for my specific situation?
- What are the risks of the next step up?
- What would you recommend and why?