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Pityriasis lichenoides chronica.

Jeffrey S Henning¹

¹Ronald O. Perelman Department of Dermatology, New York University, USA.

Dermatology Online Journal

|March 8, 2005

Summary

This summary is machine-generated.

Guttate pityriasis lichenoides chronica is a rare T-cell-mediated skin condition. Treatments like oral tetracyclines and phototherapy can improve symptoms.

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Area of Science:

Dermatology
Immunology

Background:

Pityriasis lichenoides chronica (PLC) is a rare T-cell-mediated skin disorder of unknown etiology.
It is hypothesized to be triggered by an infectious agent and exists on a spectrum with other conditions.

Observation:

A 19-year-old woman presented with a five-year history of guttate macules and papules with fine scale.
Lesions were distributed on the trunk and extremities.

Findings:

The patient's presentation represents an uncommon guttate variant of pityriasis lichenoides chronica.
This condition is considered in a spectrum with pityriasis lichenoides et varioloformis acuta, mycosis fungoides, and CD30 lymphomas.

Implications:

Guttate PLC, though rare, should be considered in the differential diagnosis of papulosquamous eruptions.

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Treatment options include oral antibiotics (tetracyclines) and various forms of phototherapy (UVB, UVA1, PUVA).