II. Definition

  1. Autoimmune inflammatory condition that affects keratinized areas including vulva

III. Epidemiology

  1. Affects patients between ages 30 to 60 years
  2. Much less common than Vulvar Lichen Sclerosus as a cause for Vulvar Dermatitis

IV. Types

  1. Erosive Lichen Planus (most common variant)
    1. Glassy appearing white Papules and Plaques
    2. Progression to ulcers and erosions with altered Vulvar Anatomy
    3. Vagina involved in 70% of cases (vagina not involved in Lichen Sclerosus)
      1. Vaginitis characterized by friable, tissue with adhesions and serous discharge
    4. May concurrently involve Vulvovaginal-Gingival Syndrome
  2. Papulosquamous Lichen Planus
    1. Poorly demarcated pink opaque Papules
  3. Hypertrophic Lichen Planus
    1. Perineum and perianal hyperkeratotic lesions
    2. May present as Squamous Cell Carcinoma

V. Symptoms

  1. Vulvar Pruritus or burning
  2. Postcoital bleeding
  3. Dyspareunia

VI. Signs

  1. See types above
  2. Speculum exam is very uncomfortable in erosive Lichen Planus due to associated Vaginitis

VII. Labs: Erosive Lichen Planus

  1. Punch Biopsy of erosion borders
  2. KOH and wet prep to evaluate for fungal and Bacterial causes of Vaginitis

VIII. Differential Diagnosis: Erosive Lichen Planus

IX. Management

  1. Hydrocortisone suppositories for vaginal lesions
  2. Topical Corticosteroid for vulvar lesions (or applied on vaginal dilator for erosive Vaginitis)
    1. Choice of strength depends on severity
      1. Level 1: Clobetasol Propionate 0.05% ointment (ultra-potent bid in severe cases)
      2. Level 2: Betamethasone Dipropionate 0.05% ointment
      3. Level 3: Betamethasone Dipropionate 0.05% cream
      4. Level 4: Triamcinolone Acetonide 0.1% ointment (medium potency qhs in mild cases)
    2. Taper steroid on resolution of active lesions
  3. Systemic Corticosteroids
    1. Indicated in cases refractory to Topical Corticosteroids
    2. Prednisone 40 to 60 mg orally daily for 2-4 weeks

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