Infectious causes of pityriasis lichenoides: a case of fulminant infectious mononucleosis.

Klein, Peter A; Jones, Evan C; Nelson, Jonathan L; Clark, Richard A F · J Am Acad Dermatol · 2003

case_report · Level V

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Abstract

Pityriasis lichenoides is a rare cutaneous eruption of unknown cause that spans a spectrum of clinical severity. Infectious agents have long been suspected as etiologic factors. The present case is the first to demonstrate a known EBV-mediated process evolving and resolving in concert with pityriasis lichenoides. Epstein-Barr virus, Toxoplasma gondii, and HIV are the most frequently reported infectious triggers of pityriasis lichenoides. Pityriasis lichenoides may arise secondary to EBV-mediated acute infectious mononucleosis.

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