Lichen sclerosus is a skin condition that causes itchy white patches on the genitals or other parts of the body. There's no cure, but treatment can help relieve the symptoms.
Lichen sclerosus affects people of all ages, including children. But it's much more common in women over 50.
It causes patches on the skin that are usually:
The patches can appear anywhere, but most often are on the:
Your GP may refer you to a specialist for tests and treatment.
Lichen sclerosus cannot be cured, but prescription steroid cream usually helps relieve the symptoms.
You may need to use the cream regularly for a few months to get your symptoms under control.
If your symptoms keep coming back, you may have to keep using it every now and again.
You can get more cream from a GP if you need it.
To help stop your skin becoming irritated or damaged:
wash with emollient soap substitutes instead of regular soap – ask a doctor or pharmacist about suitable products
gently dab your genitals dry after peeing
regularly apply a barrier cream or ointment, such as petroleum jelly, to affected areas
wear cotton or silk underwear
use vaginal lubricant if sex is uncomfortable
do not scratch or rub the affected skin
do not wear tight or restrictive clothes – women may find it helps to wear stockings rather than tights
do not wash your underwear with detergent – just use water
Although treatment can help, skin affected by lichen sclerosus can sometimes become scarred and tight over time.
This can cause discomfort when peeing, pooing, having sex or getting an erection.
If it's severe, you might need a small operation, such as surgery to widen your vagina or remove your foreskin (circumcision).
Lichen sclerosus also increases your risk of getting cancer on your vulva or penis.
The risk is low, but it's a good idea to check yourself regularly and see a GP if you're worried.
Symptoms to look for include a lump or ulcer that does not go away.
The cause of lichen sclerosus is unknown.
It might be caused by your immune system, the body's defence against infection, mistakenly attacking and damaging your skin.
Lichen sclerosus is not: