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pityriasis lichenoides (parapsoriasis guttate, pityriasis lichenoides et varioliformis acuta, PLEVA, Mucha-Habermanndisease)

Acute {pityriasis lichenoides et varioliformis acuta (PLEVA)} & chronic {pityriasis lichenoides chronica} forms. Epidemiology: children & young adults Pathology: 1) self-limited disease 2) cutaneous infiltrate of cytotoxic T-cells [2] Clinical manifestations: 1) mild course 2) persistence of lesions & recurrence not uncommon 3) vesicles, papules & crusted lesions may result in smallpox- like scars

General

parapsoriasis

References

  1. Stedman's Medical Dictionary 27th ed, Williams & Wilkins, Baltimore, 1999.
  2. Wenzel J et al, The role of cytotoxic skin-homing CD8+ lymphocytes in cutaneous T-cell lymphoma and pityriasis lichenoides J Am Acad Dermatol 2005; 53:422 PMID: 16112347