2023 Vulval Skin Conditions (2011 Swap) Flashcards
What is the most common vulval dermatosis & what is its incidence?
Lichen sclerosus
1.6-3%
What are the symptoms of lichen sclerosus?
- Itch
- Soreness
- Dyspareunia
- Urinary Sx due to fusion of labia minora
- Constipation if perianal involvement
- Rarely, asymptomatic
What are the signs of lichen sclerosus?
- Pallor, often atrophic but atypically, hyperkeratotic
- Purpura, common, pathognomonic
- Loss of architecture
- Erosions
- Lichenification atypically
What is the distribution of lichen sclerosus?
- Labia majora
- Labia minora
- Clitoral hood
- Perianal skin
- Not vagina
- Localised or in figure of 8 distribution
- Extra-genital lesions in up to 10%
What are the complications of lichen sclerosus?
- Squamous cell carcinoma: <5%
- Clitoral pseudocyst if hood seals
- Sexual dysfunction
- Urinary Sx
- Vulvodynia
- Reactivation of HSV or HPV
What are the histological features of lichen sclerosus?
- Epidermal atrophy
- Sub-epidermal hyalinisation
- Lymphocytic dermal infiltrate
With clinical diagnosis of lichen sclerosus, in which circumstances is a biopsy essential?
- Diagnosis uncertain
- Atypical features
- Suspicion of dVIN or SCC
- Failure to respond to 1st line Tx
- Development of atypical pigmented areas
What is the treatment for lichen sclerosus?
- Ultrapotent topical steroid
eg clobetasol propionate,
mometasone fuorate
1m daily, 1m alternates, 1m twice wk - Review at 3 months
- Oral retinoids if severe hyperkeratosis
What are the pregnancy & breastfeeding considerations with lichen sclerosus?
- LS tends to improve in pregnancy
- No contraindication to NVB
- Can continue topical steroids
- Oral retinoids highly teratogenic, must be stopped 2 years prior to TTC
What is the likely pathophysiology of lichen sclerosus?
Inflammatory
Autoimmune
Antibodies to ECM protein 1
What are the symptoms of lichen planus?
- Itch
- Soreness
- Dyspareunia
- Urinary Sx
- Vaginal discharge
- Can be asymptomatic
What are the 3 classifications of lichen planus?
- Classical
- Hypertrophic
- Erosive
What are the signs of classical lichen planus?
- Papules
- Keratinised anogenital skin
- Striae on inner aspect of vulva
- Hyperpigmentation
What are the signs of hypertrophic lichen planus?
- Thickened warty plaques
- May become ulcerated, infected & painful
- Involvement of vagina excludes LS
What are the signs of erosive lichen planus?
- Eroded mucosal surfaces
- Wickham’s striae: purple lacy network
- Can lead to scarring & complete stenosis
- Friable telangiectasia & patchy erythema
- Serosanguinous discharge
What are the complications of lichen planus?
- Scarring, inc vulval & vaginal adhesions
- SCC, mainly linked to hypertrophic type
What are the histopathological findings in lichen planus?
- Saw-toothed acanthosis
- Increased granular layer
- Basal cell liquefaction
- Band-like lymphocytic dermal infiltrate
What is the treatment for lichen planus?
- Ultra-potent topical steroid
eg clobetasol propionate - Oral steroids for severe flares
- Topical calcineurin inhibitors eg tacrolimus
What are the treatments for vulval eczema?
- Emollients & soap substitutes
- Mild to moderate topical steroids
- If significant inflammation or lichenification, potent/ultrapotent steroid
- Sedating antihistamine if severe itch disrupting sleep
What are the treatments for vulval psoriasis?
- Weak to moderately potent steroids
- Vitamin D analogues
- Weak coal tar preparations
What are the treatments for HSIL: high-grade intraepithelial lesions?
- Local excision
- Imiquimod cream, especially if multifocal disease
- Refer all to vulval clinic
- Cidofovir as alternative to imiquimod
What are the treatments for dVIN?
- Local excision
- MDT advice
What are the treatments for NSAGU: non-sexually-acquired genital ulcers?
- Topical local anaesthetic
- NSAIDs
- Aciclovir until HSV excluded
- Clobetasol propionate OD
- Systemic steroids under specialist
What are the treatments for provoked vulvodynia?
- 5% lidocaine ointment or 2% lidocaine gel
- Pelvic floor physio
- Psychosexual services
What are the treatments for unprovoked vulvodynia?
- Pain modifiers eg amitriptyline
- Topical local anaesthetic
- Pain clinic referral
- Duloxetine, pregabalin or gabapentin
What are the types of eczema, which can also present vulvally?
- Atopic
- Contact
- Seborrhoeic
What proportion of the population is affected by atopic eczema?
15-20%
What is the pathophysiology of eczema?
- Gene mutation affecting structural epidermal barrier
- Environmental triggers
- Chronic inflammation
What is the pathophysiology of seborrhoeic eczema?
Overexubetant inflammatory response to non-pathogenic yeast: malassezia
What are some precipitating factors for lichen simplex?
- Underlying dermatoses
- Systemic conditions causing itch
- Environmental factors
- Psychiatric disorders
What are the signs & symptoms of vulval eczema?
- Itch
- Erythematous inflammation
- Poorly demarcated margins
- Fissuring
- Xerosis (dry skin)
- Lichenification if chronic
- Weeping, blisters & erosions if severe allergic contact dermatitis
How does seborrhoeic eczema present?
- Mildly pink
- Glazed
- Poorly defined patches
- Slightly greasy scale
- Pubic region, groin flexures, natal cleft
What proportion of the population have psoriasis?
2%
What proportion of patients with psoriasis have genital involvement at some stage?
60%
What are the symptoms of genital psoriasis?
- Itch
- Soreness
- Dyspareunia
What are the signs of genital psoriasis?
- Well-demarcated brightly erythematous plaques
- Symmetrical, on labia majora & mons pubis
- May extend into inguinal folds, perianal skin & natal cleft
- Rarely scales as moist
- Fissuring
What are the complications of vulval psoriasis?
- Secondary candidiasis
- Streptococcal infection
How is VIN now classified?
- LSIL: low-grade squamous intraepithelial lesions
- HSIL: high-grade squamous intraepithelial lesions
- differentiated VIN
What are the rates of HSIL?
3 per 100,000
What proportion of VIN cases are HSIL?
95%
What is the cause of LSIL & HSIL?
High-risk HPV, predominantly 16
What is the epidemiology of HSIL?
- Peak age 35-49
- Smokers
- Immunocompromised
What is the aetiology of dVIN?
- Older age group
- Lichen sclerosus & occasionally planus
What are the symptoms of VIN?
- Burning
- Itch
- Lump or thickening
- Asymptomatic
What are the signs of HSIL?
- White, erythematous or pigmented
- Warty
- Multifocal
What are the signs of dVIN?
- Treatment-resistant lichen sclerosus
- Hyperkeratotic, erosive or ulcerated
- At vestibule, in & around clitoris, labia minora & introitus, perineum, perianal skin
What are the complications of VIN?
- Progression to SCC
- Multifocal disease
- Recurrent disease
- Psychosexual issues
What is the rate of progression to SCC of a) HSIL, b) dVIN
a) 10%
b) 50%
What are the histological findings in HSIL?
- Disruption of architecture
- High nuclear to cytoplasmic ratio
- Hyperchromasia
- Pleomorphism
- Cytological atypia
- Mitoses
- Basal layer atypia
- P16 block patterning
What are the histological findings in dVIN?
- Difficult to interpret
- Acanthosis
- Parakeratosis
- Irregular elongation
- Anastomoses of rete ridges
- Basal layer atypia
- p53 staining
What are the infective causes of acute genital ulceration?
- HSV
- Zoster
- Syphilis
- Monkey pox
- Lipschutz
What are the inflammatory causes of acute genital ulceration?
- Pyoderma gangrenosum
- Immuno-bullous disease
- SLE
What are the other non-infective/non-inflammatory causes of acute genital ulceration?
- Fissuring
- Burns
- Stevens-Johnson syndrome
- Toxic epidermal necrolysis
What are the infective causes of chronic genital ulceration?
- TB
- LGV
- Chancroid
- Hypertrophic HSV
- Amoebiasis
- Schistosomiasis
- Leishmaniasis
What are the inflammatory causes of chronic genital ulceration?
- Crohn’s disease
- Behcet’s syndrome
- Hidradenitis suppurativa
What are the malignant causes of chronic genital ulceration?
- HSIL
- SCC
- Extra-mammary Paget’s
- Cutaneous lymphoma
What infections are linked with NSAGU?
- EBV
- CMV
- COVID-19
How should NSAGUs be investigated?
- Screening to exclude STIs
- Consider PCR for haemophilias ducreyi
- Test for monkey pox if clinical hx
- Bacterial culture
- Infection serology
Which specific disorders are linked with vulval pain?
- Infectious: CA, HSV, HPV
- Inflammatory: LS, LP, immunobullous disorders
- Neoplastic: Paget’s, SCC
- Neurological: postherpetic neuralgia, nerve compression, neuroma
- Trauma
- Iatrogenic
- Hormone deficiency
What factors can be associated with vulvodynia?
- Other pain syndromes
- Gene polymorphisms
- Hormones
- Inflammation
- Musculoskeletal
- Neurological
- Psychosocial
- Structural defects