Abstract
Pityriasis lichenoides et varioliformis acuta and pityriasis lichenoides chronica are inflammatory skin disorders of unknown origin. Dermatoscopy may be useful for a noninvasive differential diagnosis with other papular disorders. The lesions of the acute form generally display a central whitish area or an amorphous brownish crust surrounded by a well-defined ring of pinpoint (glomerular at higher magnification) and/or linear vessels with a targetoid aspect. The papules of the chronic variant typically feature orange-yellowish structureless areas along with nondotted vessels and/or focal/sparse dotted vessels.
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Errichetti, E., Stinco, G. (2018). Pityriasis Lichenoides. In: Micali, G., Lacarrubba, F., Stinco, G., Argenziano, G., Neri, I. (eds) Atlas of Pediatric Dermatoscopy. Springer, Cham. https://doi.org/10.1007/978-3-319-71168-3_18
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DOI: https://doi.org/10.1007/978-3-319-71168-3_18
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