At a glance
Anal skin tags — sometimes called sentinel piles — are small flaps of skin near the anus. They commonly form after a hemorrhoid resolves, alongside a chronic fissure, or during pregnancy. Once you notice one, the first question is usually: will this go away on its own?
The short answer: some reduce in size, but most do not disappear completely without removal. This guide covers what people commonly experience and when it makes sense to discuss next steps.
Why skin tags form
Skin tags in the perianal area typically form because the skin was stretched or swollen at some point:
- After a thrombosed hemorrhoid — the clot resolves but the stretched skin remains
- Alongside a chronic fissure — the skin at the edge of the fissure thickens over time (this is the classic sentinel pile)
- During and after pregnancy — increased pressure and hormonal changes can contribute
- After surgery — healing tissue sometimes forms excess skin
The tag itself is not dangerous. It is simply extra skin. But it can cause practical problems — difficulty cleaning, moisture trapping, itching, or simply being noticeable and bothersome.
What happens over time
People describe a range of outcomes:
Tags that reduce in size
Some skin tags, particularly those associated with acute swelling, do shrink over time. If a tag formed during a hemorrhoid flare or during pregnancy, it may become noticeably smaller once the underlying swelling has resolved. This process can take weeks to months.
However, “shrinking” is not the same as “disappearing.” Most people who describe their tag getting smaller still have a visible tag — it is just less prominent.
Tags that stay the same
The most common pattern is that once a skin tag has fully formed, it stays roughly the same size. The skin has been permanently stretched, and there is no mechanism for the body to reabsorb it. This is particularly true for tags associated with chronic fissures, where the thickening develops over months.
Tags that grow or change
A tag that is rapidly growing, changing colour, or becoming painful should be assessed by a clinician. While skin tags themselves are benign, any change in a perianal lump warrants professional evaluation.
Living with a skin tag
Many people live with anal skin tags without significant problems. Practical management includes:
- Careful cleaning — the tag can trap small amounts of stool or moisture. Gentle cleaning with water after bowel movements helps.
- Thorough drying — moisture trapped by the tag can cause itching. Pat dry carefully.
- Loose, breathable underwear — reduces irritation from friction.
- Avoiding harsh products — no soap, wipes, or fragranced products on or near the tag.
When removal is worth discussing
Removal is a reasonable conversation if:
- The tag interferes with hygiene — you cannot clean the area properly
- It traps moisture and contributes to persistent itching
- It causes discomfort or pain from friction or irritation
- It is a source of significant distress — cosmetic concerns are valid
- It is being removed during another procedure — some surgeons will remove a tag during fissure or hemorrhoid surgery if you discuss it in advance
Removal is typically straightforward — it can be done under local or general anaesthesia depending on the size and situation. Recovery involves some tenderness for a week or two.
The bottom line
Anal skin tags are common, harmless, and usually permanent. Some shrink, very few disappear entirely, and most stay at a stable size once formed. If yours is not causing problems, there is no medical need to remove it. If it is causing practical issues or distress, removal is a reasonable option to discuss with your clinician.