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Papular dermatitis and a persistent patch test reaction to gold sodium thiosulfate
Brian R Sperber1, Julie Allee, Rosalie Elenitsas
1Department of Dermatology, University of Pennsylvania School of Medicine, Philadelphia, PA, USA.
Contact Dermatitis
|June 6, 2003
Summary
Gold allergy can cause persistent allergic contact dermatitis, even with negative patch tests for other allergens. This case highlights the diagnostic challenges of correlating clinical presentation with patch test results for gold sensitivity.
Area of Science:
- Dermatology
- Allergology
- Immunology
Background:
- Allergic contact dermatitis (ACD) due to gold is increasingly recognized.
- Persistent patch test reactions to gold are uncommon but significant.
- Understanding gold's role in ACD is crucial for diagnosis and management.
Observation:
- A 53-year-old woman presented with a 7-year history of pruritic papular dermatitis.
- Patch testing revealed a persistent, positive reaction specifically to gold sodium thiosulfate.
- Histopathology showed similarities between the patch test site and the patient's eruption.
Findings:
- The patient's dermatitis was strongly suggestive of gold allergy.
- No other causative allergens were identified through patch testing.
- Gold avoidance did not immediately resolve the cutaneous eruption, indicating diagnostic complexity.
Implications:
- This case highlights the challenges in establishing a definitive clinical correlation for gold allergy.
- Further research is needed to understand the mechanisms and clinical course of gold-induced ACD.
- Accurate diagnosis and management of gold sensitivity require careful clinical-pathological correlation.