Sentinel pile / skin tag
A common concern that people often worry about alone — usually harmless, but worth understanding.
Start here
The pages most people need first. Everything else is further down.
Sentinel pile: what it is and why it forms
A clear explanation of what a sentinel pile is, how it develops alongside a chronic anal fissure, and when it needs medical attention.
Read guide →Sentinel pile vs hemorrhoid
Understanding the common differences between sentinel piles and hemorrhoids — what people report about how they look, feel, and when they need attention.
Read guide →Skin tag after anal fissure: will it go away?
Why anal fissures leave skin tags (sentinel piles), whether they shrink on their own, when removal is worth considering, and how to manage them day to day.
Read guide →Anal skin tag removal and recovery
Options for removing anal skin tags, what the procedures involve, recovery expectations, and when removal is worth considering.
Read guide →Sentinel pile removal
When people consider having a sentinel pile or anal skin tag removed, what the procedure involves, recovery patterns, and when removal may not be necessary.
Read guide →At a glance
A sentinel pile is a small tag of skin that forms at the edge of the anus, most often near a chronic anal fissure. Anal skin tags can also develop after hemorrhoids, pregnancy, or for no clear reason. They are almost always benign but can cause discomfort, hygiene concerns, or anxiety.
Common symptoms people report
- A small, soft, painless lump near the anus
- Difficulty with hygiene after bowel movements
- Itching or irritation around the tag
- Anxiety about what the lump might be
- Cosmetic concern
Explore by symptom
Start from what you're feeling.
Guides
Open a group to see every guide in it.
All guides
- Anal skin tag bleeding — When bleeding from an anal skin tag is normal irritation and when it warrants medical attention — what to look for and how to manage it.
- Can anal skin tags heal on their own — Whether anal skin tags (sentinel piles) can shrink or resolve without surgery — what people report, what the realistic expectations are.
- Do anal skin tags go away? — Whether anal skin tags (sentinel piles) shrink or disappear on their own, what people commonly experience, and when removal might be worth discussing.
- Irritated anal skin tag — Why anal skin tags become irritated, how to manage recurring irritation, and when to consider having the tag assessed or removed.
- Perianal skin tag and itching — Why perianal skin tags can cause persistent itching, what makes it worse, and practical steps people describe for managing the itch-scratch cycle.
- Sentinel piles and anal skin tags — What sentinel piles and anal skin tags are, why they form, when they need attention, and what people report about removal.
- Skin tag removal during fissure surgery — Can a skin tag be removed at the same time as fissure surgery? What people describe about combining procedures, recovery, and outcomes.
- Skin tag removal: cosmetic vs medical — Understanding the difference between cosmetic and medical reasons for anal skin tag removal — when removal is considered necessary and when it is elective.
What people have been through
These are composite narratives drawn from multiple anonymized experiences. They represent common patterns, not any single person's story.
After a procedure
- Sentinel pile discovery and removal — What people describe about finding a lump near a fissure — the confusion with haemorrhoids, the decision to remove or leave it.
Living with it long term
- Living with an anal skin tag — What daily life with an anal skin tag is really like — the hygiene challenges, the discomfort, and the strategies people use to manage it.
Common questions
Are anal skin tags dangerous?
Almost always no. Anal skin tags are benign growths. However, any new or changing lump in the anal area is worth having checked by a doctor to rule out other conditions.
Do sentinel piles go away on their own?
Sentinel piles do not typically resolve on their own once formed. They are scar-like tissue. Some people choose to have them removed, while many live with them without issue. If the underlying fissure heals, the skin tag usually stops growing but remains.
Should I see a doctor about an anal skin tag?
If the skin tag is new, changing, painful, bleeding, or causing significant concern, yes. Many people also see a doctor simply for reassurance that the lump is benign. There is no wrong reason to get it checked.
Can anal skin tags be prevented?
Preventing the conditions that cause skin tags — like chronic fissures and thrombosed hemorrhoids — can reduce the chance of developing them. Maintaining soft stools, adequate hydration, and avoiding straining all help.
Related conditions
Anal fissure
A small tear in the lining of the anus, commonly causing sharp pain during and after bowel movements.
Learn more →Hemorrhoids (piles)
Swollen blood vessels in or around the anus and rectum. One of the most common colorectal conditions.
Learn more →Pruritus ani (chronic itching)
Persistent itching around the anus that can be difficult to resolve and often worsens with scratching.
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:
- Any new lump that you have not had assessed by a doctor
- A skin tag that is changing size, shape, or colour
- Bleeding from a skin tag
- Signs of infection: redness, warmth, swelling, discharge
- Severe pain in or around a skin tag
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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