Vulval Lichen Planus: Symptoms, Causes, and UK Treatment Options

Vulval lichen planus is an inflammatory skin condition that affects the female genital area. Unlike the more common lichen sclerosus, lichen planus can also affect mucous membranes, such as the inside of the mouth (oral lichen planus) or the vagina. In the UK, it is estimated to affect approximately 1-2% of the population, though it is often underdiagnosed due to the sensitive nature of the symptoms.

Evidence suggests it is an autoimmune disorder where the body's immune system mistakenly attacks the cells of the skin and mucous membranes. It is important to remember that it is not contagious and has no link to hygiene or sexual activity. While it can be a long-term (chronic) condition, current NICE guidelines and NHS pathways offer effective management strategies to control symptoms and prevent complications like scarring or narrowing of the vaginal opening.

The symptoms of vulval lichen planus can vary from mild discomfort to severe, life-impacting pain. The most frequent signs reported by patients in the UK include:

• Intense Itching: A persistent itch that may be worse at night.
• Soreness and Burning: A raw sensation, especially when passing urine or during physical activity.
• Visual Changes: The appearance of fine, lacy white lines (known as Wickham striae) or shiny, reddish-purple flat-topped bumps.
• Erosive Changes: In some cases, the skin may look bright red and raw (erosive lichen planus), which can be particularly painful.
• Vaginal Discharge: If the internal lining of the vagina is involved, you may notice a yellow or blood-stained discharge.
• Painful Intercourse: Inflammation and potential scarring can make sexual intimacy uncomfortable or impossible (dyspareunia).

Because the symptoms of vulval lichen planus often overlap with other conditions such as chronic thrush, dermatitis, or lichen sclerosus, a formal clinical diagnosis is vital. You should ideally be seen by a GP or a specialist in a vulval clinic.

During the consultation, a clinician will examine the area. They may also check your mouth and other skin surfaces, as lichen planus can occur in multiple locations. In some instances, a skin biopsy is required to confirm the diagnosis under a microscope. This involves taking a tiny sample of skin under local anaesthetic. Obtaining a definitive diagnosis is the first step toward access to prescription-strength treatments that are not available over-the-counter.

While there is currently no permanent cure for lichen planus, symptoms can be managed effectively to allow for a normal quality of life. The NHS standard of care usually involves:

1. Topical Steroids

The mainstay of treatment is high-potency corticosteroid creams or ointments (such as clobetasol propionate). These reduce inflammation and calm the immune response. Your doctor will provide a specific 'fingerstep' application guide to ensure you use the correct amount.

2. Soap Substitutes

Standard soaps and shower gels are often too alkaline and contains perfumes that irritate inflamed vulval skin. Switching to an emollient wash or aqueous cream as a soap substitute is highly recommended to maintain the skin barrier.

3. Emollients

Regular application of a plain, greasy emollient can provide a protective layer, reducing friction and soothing the area throughout the day.

4. Calcineurin Inhibitors

If steroids are not effective, specialist doctors may prescribe second-line treatments like tacrolimus or pimecrolimus ointments, which work differently on the immune system.

If you are experiencing persistent vulval itching or have noticed changes in the appearance of your genital skin, you can speak to a GP online as an initial point of contact. An online consultation offers a private, calm environment to discuss your symptoms without the wait times often associated with local surgeries.

An online doctor can:

• Assess your symptoms and medical history.
• Provide advice on immediate self-care and irritation triggers.
• Prescribe initial treatments like emollients or mild steroid creams if appropriate.
• Advise whether you need an urgent in-person referral to a dermatologist or gynaecologist for a biopsy.
• Issue sick notes if your symptoms are making it impossible to work comfortably.

Seeking help early is the best way to prevent the condition from progressing to more severe stages that involve scarring (adhesions) of the labia or vagina.

Managing a chronic condition like vulval lichen planus requires a long-term approach. To support your treatment, UK health experts suggest the following lifestyle adjustments:

• Wear Loose Clothing: Choose cotton underwear and avoid tight-fitting trousers or leggings which can trap moisture and cause friction.
• Fragrance-Free Living: Avoid scented pantyliners, vaginal deodorants, and bubble baths.
• Gentle Cleansing: Use lukewarm water only for washing; avoid scrubbing the area.
• Regular Monitoring: Perform a vulval self-examination once a month. This helps you notice any new ulcers or changes in skin texture.

There is a very small increased risk (approx 1-3%) of developing vulval cancer in areas affected by chronic lichen planus. Therefore, annual check-ups with your GP are essential, even if your symptoms are currently well-controlled.