Lichen striatus in Adult
The nomenclature of lichen striatus in adults has remained controversial. Some authors classify acquired Blaschko dermatitis as the adult form of lichen striatus. Others view it as a separate diagnosis given its distinctive histopathology as well as the fact that typical lichen striatus cases are encountered in adults.
L44.2 – Lichen striatus
42442001 – Lichen striatus
Differential Diagnosis & Pitfalls
- Linear epidermal nevus
- Inflammatory epidermal nevus (see inflammatory linear verrucous epidermal nevus)
- Linear Darier disease
- Linear porokeratosis
- Incontinentia pigmenti
- Linear lichen planus
- Linear psoriasis
- Linear cutaneous lupus erythematosus
- Linear morphea
- Acquired Blaschko dermatitis (blaschkitis)
- Papular epidermal nevus with "skyline" basal cell layer (PENS) is a rare, newly described entity where affected children develop few hyperkeratotic polygonal or rectangular papules in one or more body locations. PENS syndrome describes a subset of patients with PENS with associated neurological findings such as epilepsy or neurodevelopmental delay.