Pityriasis Lichenoides

Chapter

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.

Keywords

Pityriasis lichenoides et varioliformis acuta Pityriasis lichenoides chronica pinpoint vessels Linear vessels orange-yellowish structureless areas 

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Copyright information

© Springer International Publishing AG, part of Springer Nature 2018

Authors and Affiliations

  1. 1.Department of Medical AreaInstitute of Dermatology, University of UdineUdineItaly

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