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Condition

Anal Fistula

Recurring drainage near the anus — diagnosis, IBD screening, and surgical coordination.

Overview

An anal fistula is a small tunnel that forms between the end of the bowel and the skin near the anus, usually following an anal abscess. It causes recurring drainage, pain, and discomfort. Fistulas don't heal on their own — they need a procedure. Crohn's disease causes complex fistulas, so evaluation also looks for underlying inflammatory bowel disease.

Common symptoms

  • Persistent drainage of pus or blood from an opening near the anus
  • Pain near the anus, worse with sitting or passing stool
  • Recurring anal abscesses (painful swellings)
  • Skin irritation or itching around the anus
  • Fever during active infection
  • Blood streaks on stool or on toilet paper

When to see a doctor

Any recurring drainage near the anus, repeated abscesses, or persistent pain in this area needs evaluation. Fistulas don't go away by themselves and tend to worsen over time. Patients with known Crohn's disease or unexplained perianal symptoms also need specialist review.

How we help

We confirm the diagnosis with clinical examination, sometimes supplemented by MRI for complex fistulas, and screen for Crohn's disease with colonoscopy where suspicion exists. For Crohn's-related fistulas, we treat the underlying IBD first with medication, which can heal some fistulas without surgery. Other fistulas need a surgical procedure (fistulotomy, seton, LIFT, or laser-based FiLaC) — we coordinate the right referral and manage post-procedure care.

This is general information, not a substitute for medical advice. For guidance specific to your case, please consult Dr. Ch. Saikumar or another qualified specialist.

Patient questions

Anal Fistula — common questions

Answers to the questions we hear most often about anal fistula.

Can a fistula heal without surgery?
Rarely — most established fistulas need a procedure. The exception is Crohn's-related fistulas, where treating the underlying IBD with medication can sometimes heal them without surgery.
Is fistula surgery painful?
Modern fistula procedures — laser-based FiLaC, LIFT, fistulotomy with seton — are usually short, done under anaesthesia, and have manageable post-operative discomfort. Recovery is typically 3–6 weeks.
Is fistula linked to Crohn's disease?
Sometimes — complex or recurring fistulas can be a sign of underlying Crohn's. We screen for Crohn's with colonoscopy when suspicion exists, because treatment changes significantly if IBD is present.
How long is recovery from fistula surgery?
Typically 3–6 weeks for full healing. Most patients return to office work within 1–2 weeks. We provide detailed wound care guidance and follow-up to ensure proper healing.
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