- Perform under a good light, with adequate exposure including peri-anal skin
- No necessity for colposcopy or acetic acid, except for examination of VIN
- Ask patient to show the affected area first
- Consider extra-genital sites: scalp, elbows, knees, nails, oral mucosa
- Consider infestations such as scabies, lice, ringworm, pinworm, threadworm
- No need to test for auto-immune conditions without a clinical indication
- Consider serum ferritin in women with vulval dermatitis. Correction of iron-deficiency anaemia or low serum ferritin can relieve vulval symptoms
- STI screen if clinically indicated
- Biopsy:
- If the woman fails to respond to treatment
- There is suspicion of VIN or cancer (20-22% of VIN have invasive cancer on biopsy)
- There are atypical or suspicious areas
Benign causes of vulval symptoms include:
Lichen simplex chronicus or Chronic vulval dermatitis: a common inflammatory skin condition, especially in those with sensitive skin, dermatitis or eczema. Severe,intractable pruritis, especially at night. There may be erythema and swelling with discrete areas of thickening and lichenification, especially with scratching. Sometimes linked to stress or low body iron stores.
Vulval candidiasis: diabetes, obesity and antibiotic use may be contributory. Prolonged topical or oral antifungal therapy may be necessary.
Vulval psoriasis: Involves vulval skin but not vaginal mucosa. The appearance often differs from the typical scale of non-genital sites. It often appears as smooth, non-scaly red or pink discrete lesions.
Atrophic vulvovaginitis: In premenarchal girls and postmenopausal women. See menopause protocol.
Lichen sclerosus. Skin often pale and affected in a ‘figure-of-eight’ pattern. Inflammation can result in adhesions, fusion and resorption of the labia. See Lichen sclerosus protocol.
Lichen planus: Usually affects mucosal surfaces and commonly seen on oral mucosa. Presents with flat-topped violaceous purpuric plaques and papules with a fine white reticular pattern (Wickham striae) but can be erosive and painful. Erosive LP appears as a well demarcated, glazed erythema around the introitus. Aetiology is unknown, but may be autoimmune. It can affect all ages and not linked to hormonal status. Consider referral to vulval clinic.
Vulval Crohns disease: Vulval involvement by direct extension from involved bowel or metastatic granulomas, rarely preceding or without known bowel disease. Vulva often swollen and oedematous with granulomas, abscesses, ulceration or draining sinuses. Refer to vulval clinic.
Vulvodynia: see vulval pain protocol