Selection of patch test materials for gold allergy.

Allergic contact dermatitis to gold is very rarely reported. The occurrence of 2 recent cases in our department prompted a review of the literature, especially regarding the optimal reagents for patch testing. Gold chloride is most commonly used but may cause persistent dermatitis at the test site. Gold sodium thiosulfate is commercially available in petrolatum and is a reliable, non-irritant preparation for patch testing.