What is the clinical history of pityriasis lichenoides?

Updated: Sep 11, 2020
  • Author: Jeffrey P Callen, MD; Chief Editor: Dirk M Elston, MD  more...
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The history is dependent on where an individual patient's manifestations fall on the spectrum of Mucha-Habermann disease. Note the following:

The common variant of pityriasis lichenoides et varioliformis acuta (PLEVA) presents with the abrupt appearance of multiple papules on the trunk, buttocks, and proximal extremities. Papules rapidly progress to vesicles and hemorrhagic crusts. Minor constitutional symptoms may be present. A patient with febrile ulceronecrotic PLEVA presents with acute constitutional symptoms such as high fever, malaise, and myalgias. Lesions of PLEVA may be associated with burning and pruritus.

At the subacute end of the spectrum, pityriasis lichenoides chronica (PLC) may develop over days. PLC also is distributed over the trunk, buttocks, and proximal extremities.

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