Labial fusion

Also called Labial adhesions

Labial fusion is when the inner lips (labia minora) of the vulva become stuck together. It is common in girls aged 3 months to 6 years and is thought to be linked to low oestrogen levels before puberty. It usually causes no symptoms and is not caused by anything the parent has done.

Last updated Nov 9, 2026

What it is

It usually separates on its own, often by puberty, so treatment is not usually needed.

If it causes problems with peeing or infections, an oestrogen cream can help. Separating the lips by force should be avoided.

Common signs

  • The inner lips look joined in the middle
  • Usually no symptoms
  • Dribbling pee or difficulty peeing, sometimes
  • Repeated urine infections, sometimes

How it is usually diagnosed

  • Examination by a doctor

Records worth keeping

Keeping these together makes each appointment easier, especially when you see a new doctor:

  • Paediatric notes
  • Urine test results, if infections occur

Questions to ask your doctor

  • Does it need treatment?
  • How should we keep the area clean?
  • What signs should I watch for?

When to get help right away

Call 112 or go to the nearest emergency department if you have:

  • A child who cannot pee at all, or has a high fever with pain when peeing: get urgent medical help

This page is general information. It is not a diagnosis and does not replace a doctor who knows your history. Medfold keeps your records organised; it does not interpret them.

Sources