Anal fistula
A condition that often follows a perianal abscess and usually requires surgical treatment. Everything here is private, anonymous, and written to help you understand the journey ahead.
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The pages most people need first. Everything else is further down.
Anal fistula: patterns and care
Learn what an anal fistula is, how it connects to abscesses, what people commonly experience, treatment options, and when to seek medical care.
Read guide →Anal fistula symptoms to watch for
The common symptoms of an anal fistula — what people describe experiencing, how to distinguish fistula symptoms from other conditions.
Read guide →Can an anal fistula heal without surgery
Whether an anal fistula can close on its own, what non-surgical approaches exist, and when surgery becomes the recommended path
Read guide →Recovery after fistulotomy
Learn what to expect during recovery after a fistulotomy, including wound healing, pain management, bowel movements, and when to seek medical care.
Read guide →Fistulotomy wound healing time
How long a fistulotomy wound takes to heal, what the stages of healing look like, and what factors affect the timeline.
Read guide →Living with a seton
Learn what a seton is, what daily life with one is like, how to manage hygiene and comfort, and when to seek medical care.
Read guide →Fistula surgery: incontinence risk
Understanding the risk of incontinence after anal fistula surgery — what the risk actually involves, how it varies by procedure.
Read guide →LIFT procedure for fistula
What the LIFT procedure for anal fistula involves — how it works, who it is suitable for, recovery expectations, and success rates.
Read guide →Fistula wound drainage explained
What the colour, amount, and smell of fistula wound drainage means — normal healing patterns versus signs of concern, based on common experiences.
Read experience →Living with a seton: daily care
What daily life with a seton drain actually looks like — cleaning routines, comfort tips, and how people manage the practical realities over weeks and months.
Read experience →At a glance
An anal fistula is a small abnormal tunnel that forms between the inside of the anal canal and the skin near the anus. It most commonly develops after a perianal abscess has drained. Around half of perianal abscesses are reported to develop into a fistula. Treatment usually involves some form of surgery, with the approach depending on the fistula's path and complexity. Our basics guide covers how fistulas form, what to expect, and when to seek care.
Common symptoms people report
- Persistent or recurring drainage near the anus
- Pain or discomfort, especially during bowel movements
- Swelling that comes and goes in the same area
- An external opening near the anus that may discharge fluid
- A recurring abscess in the same location
- Skin irritation from ongoing drainage
Explore by symptom
Start from what you're feeling.
Guides
Open a group to see every guide in it.
Setons
- Cutting vs draining seton — The difference between cutting setons and draining setons for anal fistulas — how each works, when each is used, and what living with them involves.
- Drains and setons after fistula surgery — Understand what surgical drains and setons are, why a surgeon might place one after fistula or abscess surgery, and what living with one day to day can involve.
- How long is a seton left in place — How long setons typically stay in place for anal fistula treatment — what determines the timeline and what people describe about living with one.
- Seton and exercise: what is safe — What types of exercise are safe with a seton in place for an anal fistula — what people describe about staying active, what to avoid, and how to adapt.
- Seton and swimming: is it okay — Can you swim with a seton in place? What people describe about pool and open water swimming with a fistula seton — hygiene, comfort, and practical tips.
- Seton hygiene: keeping the area clean — Practical advice on keeping the area around a seton drain clean and comfortable — daily routines, after bowel movements, and managing discharge.
- Seton pain: what is normal — What kind of pain to expect while living with a seton drain for an anal fistula — common patterns, what changes over time, and when to contact your surgeon.
- Seton placement: what to expect — What happens during seton placement for an anal fistula — the procedure, anaesthesia, recovery, and what life with a seton is like in the first few days.
- Seton removal: what happens next — What to expect when a seton is removed — the procedure, the healing process afterwards, and the next steps people commonly describe.
Recovery and wound care
- Discharge after fistula surgery — What is normal drainage after fistula surgery, what is not, and when to contact your doctor — based on common patterns people report.
- Fistulotomy and sitz baths — How sitz baths fit into fistulotomy recovery — when to start, how to do them, how often, and what people commonly describe about the experience.
- Fistulotomy bleeding: how much is normal — What amount and type of bleeding to expect after fistulotomy — normal patterns, concerning signs, and when to seek help.
- Fistulotomy recovery: the first week — A day-by-day look at what people experience during the first week after fistulotomy — pain management, the first bowel movement, wound care, discharge.
- Fistulotomy smell: is it normal? — Whether wound odour after fistulotomy is normal, what different smells may indicate, and when to contact your surgical team.
- Fistulotomy wound not healing: when to worry — What people experience when a fistulotomy wound heals slowly — common timelines, what is normal, what is not, and when to go back to your doctor.
Surgery and treatments
- Advancement flap for fistula: how it works — How advancement flap surgery works to close an anal fistula — the mechanism, why it preserves sphincter function.
- Advancement flap success rate — What the research and patient accounts say about advancement flap success rates for anal fistula — healing rates, recurrence.
- Deciding whether to have a fistulotomy — Weighing up whether to go ahead with a fistulotomy — what the procedure treats, the trade-offs people consider, and questions worth asking your surgeon.
- Fibrin glue for fistula — How fibrin glue treatment works for anal fistula, who it may be suitable for, success rates, and what people describe about the experience.
- FiLaC laser treatment for fistula — An overview of FiLaC (fistula laser closure) for anal fistula — how it works, who it may be suitable for, what people describe about recovery.
- Fistula plug: does it work — What a fistula plug is, how it works, published success rates, and what people describe about their experience with this procedure.
- Fistulotomy: procedure explained — What a fistulotomy involves — how the procedure works, what happens on the day, and what to expect from the open wound that follows.
- Horseshoe fistula: what it means — A horseshoe fistula is a complex type of anal fistula that extends around both sides of the anus. What it involves, why it matters.
- How common is fistula after abscess — The likelihood of developing an anal fistula after a perianal abscess — what the evidence shows, what factors affect the risk, and what to watch for.
- Intersphincteric vs trans-sphincteric — The difference between intersphincteric and trans-sphincteric anal fistulas — what these classifications mean, how they affect treatment, and why it matters.
- Questions to ask about fistula surgery — A practical list of questions to ask your surgeon about fistula treatment — covering the type of procedure, recovery expectations, continence risks.
- Rectovaginal fistula: an overview — What a rectovaginal fistula is, what causes it, how it is diagnosed, and the treatment options available — a sensitive guide to a difficult condition.
- Recurrent fistula: why it comes back — Why anal fistulas recur after treatment, risk factors for recurrence, and what options exist for persistent fistulas.
- Second fistula surgery — What to expect when a second surgery is needed for an anal fistula — why it happens, what the options are, and what people experience the second time around.
- Stem cell treatment for fistula — Stem cell therapy for anal fistula is an emerging treatment option. What the current research shows, who it may suit, and where things stand.
- Types of fistula: simple vs complex — The difference between simple and complex anal fistulas — what the classification means, how it affects treatment decisions, and why it matters for your care.
- VAAFT procedure for fistula — What the VAAFT (video-assisted anal fistula treatment) procedure involves — how it works, who it is suitable for.
- What makes a fistula complex — Not all anal fistulas are the same. What makes a fistula complex, how complexity affects treatment options, and what it means for recovery.
Understanding fistulas
- Fistula after childbirth — How anal fistulas can develop after childbirth, how they present, the treatment considerations for new parents, and what to expect.
- Fistula diagnosis: MRI and EUA — How anal fistulas are diagnosed — what to expect from an MRI, examination under anaesthesia (EUA), and why accurate mapping matters for treatment planning.
- How a fistula forms after an abscess — The process by which a perianal abscess can lead to a fistula — the anatomy, the mechanism, and what people need to understand about this common progression.
- What is an anal fistula — A clear explanation of what an anal fistula is, how it forms, what the symptoms are, and what treatment typically involves
Everything else
- Fistula and Crohn's disease — How anal fistulas relate to Crohn's disease — why they occur, how management differs, and what people with Crohn's-related fistulas need to know.
What people have been through
These are composite narratives drawn from multiple anonymized experiences. They represent common patterns, not any single person's story.
Early days
- Emergency abscess and fistula surgery — What people describe when an abscess and fistula are discovered and treated in an emergency — the shock, the surgery.
After a procedure
- Abscess came back after fistulotomy — What people experience when an abscess returns after fistulotomy — the emotional weight, the signs, and how they navigated the conversation about next steps.
- Advancement flap surgery recovery — What surgery day and the first days of recovery from an advancement flap actually look like — the procedure itself, waking up.
- Advancement flap: the daily reality — What the day-to-day reality of advancement flap recovery looks like over months — the emotional journey, unexpected complications.
- Back to work after fistulotomy — What returning to work after fistulotomy looks like — timelines, practical challenges, and how people manage the transition.
- Diet after fistulotomy surgery — What people eat after fistulotomy surgery — the foods that help, the ones to avoid, and how diet supports wound healing.
- Discharge after fistula surgery — The different types of wound discharge people experience after fistula surgery — what is expected at each stage, what changes to watch for.
- Driving after fistula surgery — When people typically return to driving after fistula surgery — the practical considerations, the common timeline.
- Exercise after fistula surgery — When and how people return to exercise after fistula surgery — the timelines, setbacks, and practical adjustments that shape the journey back to activity.
- Fistula recurrence after surgery — What people describe about fistula recurrence after surgical treatment — the rates, the risk factors, and how to cope with the possibility.
- Fistulotomy packing changes — What fistulotomy wound packing changes are like — the process, the discomfort, and what people describe about this part of recovery.
- Fistulotomy wound care at home — What daily fistulotomy wound care is really like at home — the routine, the challenges, and what people describe about the healing process.
- Flying after fistula surgery — What people experience when flying after fistula surgery — timing, preparation, and the practical concerns that come with air travel during recovery.
- Follow-ups after fistula surgery — What follow-up appointments after fistula surgery involve, what the surgeon checks, and how to prepare for these visits.
- Granulation tissue in fistula wound — What granulation tissue in a fistula wound looks like, whether it is a good sign, and what people experience when healing does not follow the expected.
- Is my fistula wound healing properly? — What people describe about recognising normal healing versus problems after fistula surgery — the signs to watch for and what to expect at each stage.
- LIFT fistula surgery recovery — What recovery from LIFT surgery looks like — the first days, wound care, drainage patterns, pain levels, and the gradual return to normal life.
- Open wound care at home after anal surgery — What people describe about managing an open surgical wound at home after fistula or abscess surgery — the daily reality of wound packing, bathing.
- Pus after fistula surgery: healing? — What people describe about discharge after fistula surgery — the difference between normal healing drainage and signs of infection.
- Sex after fistula surgery — A composite account of navigating intimacy after fistula surgery — the physical realities of open wounds, setons, and drainage.
- Sleeping after fistula surgery — Practical guidance on sleeping during fistula surgery recovery — positions, pain management, and strategies people use to get the rest they need.
- Wound healing by secondary intention — What it means when a surgical wound heals by secondary intention — the process, the timeline, and what people experience during this type of healing.
Living with it long term
- Daily life with a seton: what people describe — A composite experience of living with a seton in place for an anal fistula — the adjustment period, hygiene routines, and the waiting game before next steps.
- Fistula healing journey — What recovery and eventual healing from an anal fistula looks like — from diagnosis through treatment to resolution, based on many accounts.
- From abscess to fistula: a pattern — A composite experience of how a perianal abscess can develop into an anal fistula — what people commonly describe.
Common questions
How common are anal fistulas?
Anal fistulas are less common than hemorrhoids or fissures, but they are not rare. They are one of the conditions most frequently treated by colorectal surgeons. They are more common in men and most often appear between the ages of 20 and 40.
What is the connection between an abscess and a fistula?
A perianal abscess is typically caused by an infected gland inside the anal canal. When the abscess drains — either on its own or surgically — the tunnel it creates sometimes does not close fully. That persistent tunnel is a fistula. Not every abscess leads to a fistula, but roughly half are reported to.
Are there different types of fistula surgery?
Yes. The approach depends on the fistula's path relative to the sphincter muscles. Simpler fistulas may be treated with a fistulotomy, where the tunnel is laid open to heal from the inside out. More complex fistulas may need a seton (a thread placed through the tunnel) or other techniques to protect the sphincter. We have guides covering both fistulotomy and seton placement.
How long is the recovery from fistula treatment?
Recovery varies depending on the procedure and the individual. People commonly report several weeks of wound care and gradual improvement. Some complex fistulas require staged treatment over months. Our experience stories cover what recovery looked like for different people in different situations.
Can a fistula come back after surgery?
Recurrence is possible, particularly with more complex fistulas. Rates vary depending on the type of fistula and the procedure performed. Follow-up with your surgeon is important to monitor healing and catch any signs of recurrence early.
Related conditions
Perianal abscess
A painful, pus-filled pocket near the anus, usually requiring drainage.
Learn more →Post-procedure recovery
Recovery experiences after common colorectal procedures including surgery, banding, and drainage.
Learn more →Anal fissure
A small tear in the lining of the anus, commonly causing sharp pain during and after bowel movements.
Learn more →When to seek care Heavy bleeding or feeling faint? Get emergency help now. Emergency: 911
Not sure how urgent it is? Get help today.
- Emergency
Heavy bleeding, black tarry stools, feeling faint, severe pain or trouble breathing.
Call 911 or go to the ER.
- Today
Fever, pain getting worse, a hot swollen lump, or trouble passing urine.
Call your doctor or go to urgent care.
- Soon
Bleeding or bowel changes nobody has checked, or anything lasting 3 weeks.
Book a doctor’s appointment.
Feeling overwhelmed? Call or text 988, any time.
See all the signs
For this topic, get medical advice if you notice:
- Increasing pain, swelling, or redness near a previous abscess or fistula site
- Fever or chills alongside perianal symptoms
- New or worsening drainage with an unpleasant odour
- A rapidly growing lump near the anus
- Difficulty passing urine alongside perianal pain or swelling
- Any symptoms that are getting worse rather than better
Recording how you feel is not the same as being checked. These are the signs that need a doctor’s attention.
Call 911 or go to the emergency room now if you have:
- bleeding that will not stop, a lot of blood (the toilet water turns red, or you pass large clots), or any bleeding with feeling faint or dizzy
- fainting, a racing heart or trouble breathing
- confusion or slurred speech, extreme shivering, no urine in a day, or blotchy skin
- sudden severe belly pain, or a swollen, hard belly with vomiting or not passing stool or gas
- you cannot pass urine at all, or your bladder feels full and painful and you can’t empty it
- redness, swelling or severe pain spreading quickly around your anus, genitals or groin, especially with a fever or feeling very ill
- a fever with a painful swelling near your anus if you have diabetes or a weakened immune system (for example, from chemotherapy or transplant medicines)
- black, tarry stools
Call your doctor or go to urgent care today (or the ER if you can’t be seen today) if you have:
- a temperature of 100.4°F (38°C) or higher, chills, vomiting, or feeling generally unwell
- pain that is getting worse over days, or severe pain that stops you sitting or sleeping
- a hot, swollen or very tender lump near your anus or at the top of the crease between your buttocks, or foul-smelling discharge
- trouble urinating
- bleeding that is getting heavier or more frequent, or blood mixed into your stool
- feeling much more tired than usual, looking pale, or getting out of breath more easily than you used to
- not passing stool for several days, or new belly pain
Make an appointment with your doctor if:
- you have never had these symptoms checked by a doctor or nurse — whatever your age
- you have had rectal bleeding for more than 3 weeks
- your bowel movements have been looser, thinner or more frequent than usual for 3 weeks or more, or you have lost weight without trying
- symptoms have not settled after a week or so, or keep coming back
- you notice a new lump near your anus, between your buttocks or in your belly, or an itch or discharge that does not clear
- you have new leakage or trouble controlling your bowels
- you are 45 or over, or have a family history of bowel cancer or inflammatory bowel disease, and any of these symptoms are new for you
If you are unsure, it is always reasonable to ask. If things feel overwhelming, call or text 988 (Suicide & Crisis Lifeline) or chat at 988lifeline.org, any time. If you don’t feel safe, call 911.
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