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Related Experiment Videos

Persistent solar urticaria. A case report.

G Ghigliotti1, C Brusati, M Guarrera

  • 1Division of Dermatology, S. Martino Hospital, University of Genoa, Italy.

Photodermatology, Photoimmunology & Photomedicine
|July 15, 1999
PubMed
Summary
This summary is machine-generated.

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Solar urticaria, a rare skin condition, typically causes rapid, short-lived hives after sun exposure. This case details delayed, prolonged hives, later developing into idiopathic urticaria.

Area of Science:

  • Dermatology
  • Immunology

Background:

  • Solar urticaria (SU) is an uncommon photodermatosis.
  • Characterized by rapid onset (minutes) of pruritic wheals after ultraviolet (UV) radiation exposure.
  • Wheals typically resolve within hours.

Observation:

  • A unique case of SU is presented in a male patient.
  • Wheals appeared >30 minutes post-sun exposure and persisted >24 hours.
  • High-dose UVA exposure reproduced urticarial lesions histologically.

Findings:

  • The patient's SU exhibited delayed onset and prolonged duration.
  • After 7 years, the patient developed non-UV-induced urticaria.
  • This later development of idiopathic urticaria is an unusual comorbidity.

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Implications:

  • This case expands the clinical spectrum of solar urticaria.
  • Highlights the importance of considering atypical presentations in photodermatoses.
  • Suggests potential links between SU and the later development of idiopathic urticaria.