Lichen Sclerosus - Vulval Skin Disorders

This video, titled "Lichen Sclerosus - Vulval Skin Disorders" by Gynae Consultant, covers the symptoms, clinical presentation, long-term impact, and medical treatment protocols for lichen sclerosus.

What is Lichen Sclerosus?

• Definition: Lichen sclerosus is a chronic inflammatory skin condition that primarily affects the vulva, the perineum, and the perianal skin (the skin around the anus). While it can affect both men and women, it is most frequently diagnosed in postmenopausal women.
• Etiology: The exact cause is unknown, but it is considered an autoimmune condition and frequently co-occurs with other autoimmune disorders.
• Key Distinction: Lichen sclerosus typically presents in a distinct "figure of eight" pattern around the midline of the vulva, involving the clitoral hood, clitoris, labia minora, interlabial sulcus, and perineum. Crucially, it does not involve the internal vagina or cervix (unlike lichen planus).

Symptoms and Disease Progression

• Initial Signs: The primary initial symptom is persistent itching, though some women are completely asymptomatic and are only diagnosed incidentally.
• Visual Lesions: The condition presents as pale, whitish papules or plaques, often accompanied by ecchymosis (bruising), surface erosions, ulcerations, or painful fissures (tears).
• Structural Impact: Over time, chronic inflammation can destroy the local tissue architecture. This leads to the shrinking or complete loss of the labia minora, scarring, and fusion of the tissue around the vaginal opening (introitus), which causes substantial pain and superficial dyspareunia (painful intercourse).

Diagnosis and Cancer Risks

• Clinical Approach: Diagnosis is primarily visual and based on physical inspection. However, if the condition resists standard treatment, changes in appearance, or mimics other disorders, a skin biopsy must be performed.
• Malignancy Risk: There is a small but notable risk (less than 5%) of lichen sclerosus transforming into a type of skin cancer called squamous cell carcinoma. Because of this, patients must undergo at least an annual medical review and immediately report changes like new red patches (erythema), persistent ulcers, or sudden lumps.

Treatment Protocols

1. General Skin Care

• Patients should strictly avoid chemical irritants (perfumed products, standard body washes).
• Moisturizers, personal lubricants, and gentle emollient soap alternatives should be used to protect the skin barrier.

2. Acute Treatment (First-Line Therapy)

The standard initial regimen relies on an ultra-potent topical corticosteroid ointment, specifically Clobetasol Propionate (0.05%):

• Month 1: Applied every night.
• Month 2: Applied on alternate nights.
• Month 3: Applied twice weekly, followed by a clinical review.
• Efficacy: This regimen achieves complete symptom remission in roughly 60% of cases, though the pale, scarred texture of the skin takes longer to improve.

3. Long-Term Maintenance

To manage flare-ups and prevent active recurrence, patients are often transitioned to a long-term maintenance schedule using a steroid like Mometasone Furoate (0.1% ointment) twice a week. Continuous maintenance therapy has been shown to not only sustain remission but also potentially prevent or delay the onset of malignant changes.