Lichen planus

Lichen planus is a non-infectious, itchy rash that can affect many areas of the body.

Affected areas can include the:

arms, legs and trunk  mouth (oral lichen planus) nails and scalp vulva, vagina and penis

The exact cause of lichen planus is unknown. However, the condition isn’t infectious and doesn’t usually run in families. It can’t be passed on to other people, including sexual partners.

A GP can usually diagnose lichen planus by examining the rash and asking about your symptoms. Oral lichen planus is often diagnosed by a dentist during routine dental check-ups.

Lichen planus is an itchy rash that can occur anywhere on the body.Source: https://dermnetnz.org/

Who’s affected by lichen planus

Lichen planus is thought to affect 1-2% of the worldwide population. It’s more common in adults over the age of 40.

Lichen planus of the skin affects men and women equally. However, oral lichen planus is more common in women. The mouth is affected in around 50% of all cases of lichen planus (oral lichen planus).

Symptoms

The symptoms of lichen planus vary, depending on which area of the body is affected.

Areas of the body most commonly affected by the condition include the:

skin mouth penis vulva (external female sex organs) and vagina

Lichen planus causes symptoms like itchy skin and red, slightly raised, bumps.Source: https://dermnetnz.org/