Pityriasis lichenoides chronica
Pityriasis means "bran-like", very fine scales.
History
Lesions are asymptomatic and tend to present more gradually than with PLEVA
Distribution
Similar to PLEVA, although acral and segmental variants have been reported
Lesions are discrete, and more numerous than in PLEVA
Morphology
The characteristic lesion is a small, firm, red-brown papule with a single adherent scale, described as 'mica-like', which can be detached by gently scraping to reveal a shiny brown surface. The scale is usually not seen initially, and the eruption is often polymorphic, with lesions at different stages of evolution
Over several weeks lesions flatten and the scale separates to leave a hyperpigmented macule, which gradually fades. Post-inflammatory hypopigmentation may also be seen and can be quite persistent
Role of bromelain in the treatment of patients with pityriasis lichenoides chronica.