What Does a Lichen Sclerosus Skin Tear Look Like?
A lichen sclerosus (LS) skin tear presents as painful fissures or erosions in porcelain-white, atrophic skin, often with striking ecchymosis (bruising), occurring most commonly in the anogenital region where the skin has become fragile and prone to trauma.
Clinical Appearance
The skin tears in LS occur against a characteristic background of disease-specific changes 1, 2:
- Background skin: Porcelain-white papules and plaques with follicular delling
- Ecchymosis: Areas of bruising are frequently prominent, particularly in children where they can be mistaken for signs of abuse 1, 2
- Fissures: Linear breaks in the skin, particularly painful in perianal areas
- Erosions: Superficial loss of epithelium overlying the characteristic hyalinized collagen band 3
Key Distinguishing Features
Erosive LS represents a distinct subtype characterized by 3:
- Red patches on hairless skin (labia minora, clitoral hood)
- Eroded epithelium with gentle sloping edges from normal adjacent stratum corneum
- Overlying a band of hyalinized or fibrotic collagen on biopsy
Ulcerated LS differs and typically represents 3:
- Traumatic secondary effects in uncontrolled disease
- Abrupt slopes from hair-bearing skin
- Often described clinically as fissures or lichenified plaques with breaches
- More commonly associated with diabetes and lack of treatment
Clinical Context
In Adult Women
Fissures and erosions cause 1:
- Severe pain rather than just itching
- Dyspareunia (painful intercourse)
- Dysuria when fissuring affects the vestibule
In Children
The ecchymosis and fissuring can be particularly dramatic 1, 2:
- Perianal fissuring may cause constipation due to pain
- Dysuria from fissuring around the urethra
- The bruising appearance requires careful differentiation from abuse (though the two are not mutually exclusive)
In Men
Fissuring occurs at 1:
- Glans penis
- Coronal sulcus
- Frenulum
- Prepuce
Immediate Management
Initiate ultrapotent topical corticosteroid (clobetasol propionate 0.05% ointment) immediately upon diagnosis 1:
For Adult Women
- Once daily for 1 month
- Then alternate days for 1 month
- Then twice weekly for 1 month
- Combined with soap substitute and barrier preparation 1
For Adult Men
- Once daily for 1-3 months
- With emollient as soap substitute and barrier 1
For Children
Potent topical corticosteroids are effective and safe without significant side-effects 2
Critical Management Points
The fissures, erosions, and ecchymoses should resolve with appropriate corticosteroid treatment, though the underlying atrophy, scarring, and pallor will persist 2. If erosions persist despite treatment:
- Consider erosive LS as a distinct subtype requiring more aggressive management 3
- Rule out secondary infection or contact dermatitis
- Exclude malignancy if hyperkeratotic areas are present 1
- Refer to specialist vulval/urology clinic if not responding 1
Common Pitfalls
Mistaking ecchymosis for abuse in children: While LS can cause dramatic bruising, this does not exclude abuse as trauma can trigger LS through Koebnerization 1, 2
Undertreating: Erosive and ulcerated LS may require more intensive or prolonged corticosteroid therapy than standard LS 3
Assuming all breaks are traumatic: Erosive LS is a primary disease manifestation, not just trauma to diseased skin 3
Delaying treatment: Early intervention prevents permanent scarring and architectural changes that cause sexual and urinary dysfunction 4, 5, 6
The presence of skin tears, fissures, or erosions in LS indicates active, symptomatic disease requiring immediate treatment escalation to prevent irreversible complications.