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Solar urticaria in an infant

A Harris1, S M Burge, S A George

  • 1Department of Dermatology, Stoke Mandeville Hospital NHS Trust, Aylesbury, Bucks.

The British Journal of Dermatology
|January 1, 1997
PubMed
Summary

Solar urticaria, a rare sun allergy, was diagnosed in a 2-year-old girl with a rash after sun exposure. This early diagnosis, confirmed by specialized testing, highlights the condition

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Area of Science:

  • Dermatology
  • Photobiology

Background:

  • Solar urticaria is a rare photodermatosis characterized by immediate wheal and flare reactions upon sun exposure.
  • Early diagnosis and management are crucial for improving quality of life in affected individuals.

Observation:

  • A 2-year-old girl presented with a lifelong history of immediate erythematous rash upon sun exposure.
  • Extensive investigations ruled out other genophotodermatoses, metabolic disorders, and photoaggravated dermatoses.
  • Monochromator phototesting revealed hypersensitivity to ultraviolet B (UVB), ultraviolet A (UVA), and visible light up to 500 nm.

Findings:

  • The patient was diagnosed with solar urticaria based on clinical presentation and phototesting results.
  • She showed a positive response to daily oral loratadine treatment.
  • This case represents the earliest documented instance of solar urticaria confirmed by monochromator phototesting.

Implications:

  • This case underscores the importance of considering solar urticaria in infants and young children presenting with photosensitivity.
  • Early and accurate diagnosis through phototesting can lead to effective management and symptom relief.
  • Further research into the pathophysiology and early-onset manifestations of solar urticaria is warranted.

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