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Pityriasis rotunda

G M Pinto1, C Tapadinhas, C Moura

  • 1Department of Dermatology, Curry Cabral Hospital, Lisbon, Portugal.

Cutis
|December 1, 1996
PubMed
Summary
This summary is machine-generated.

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Pityriasis rotunda, a rare skin condition with circular, scaly lesions, typically affects specific ethnic groups and is linked to systemic illness. This case highlights its occurrence in a black man without associated systemic disease.

Area of Science:

  • Dermatology
  • Cutaneous Medicine
  • Ichthyosis Research

Background:

  • Pityriasis rotunda is a rare dermatosis characterized by asymptomatic, circular, scaly lesions.
  • Histologically, it resembles ichthyosis vulgaris.
  • Previously reported cases predominantly involved individuals of Japanese, South African, and West Indian descent.

Observation:

  • A case study of a 32-year-old black man with pityriasis rotunda.
  • Lesions were noted on the trunk and extremities.
  • The patient presented with asymptomatic, circular, scaly skin manifestations.

Findings:

  • The patient's presentation of pityriasis rotunda did not correlate with previously documented ethnic predispositions.
  • No underlying serious systemic disease was identified in this case.

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  • Histological examination was consistent with ichthyosis vulgaris.

    • Implications:

    • This case expands the known demographic profile of pityriasis rotunda.
    • It suggests that pityriasis rotunda may occur in individuals without underlying systemic conditions.
    • Further research is warranted to understand the full spectrum and etiology of pityriasis rotunda.