Positive patch-test reactions to platinum are rare.
BACKGROUND
Although contact allergy to some metals is common, patch testing for allergy to platinum is rarely performed.


OBJECTIVE
To determine the prevalence of positive patch-test reactions to platinum in an unselected consecutive group of patients presenting for diagnostic patch testing.


METHODS
Unselected patients who presented with a possible diagnosis of contact dermatitis were tested with a series of allergens, including ammonium tetrachloroplatinate 0.25% aqueous.


RESULTS
Of 446 patients tested, only 2 females showed positive reactions to platinum; one had no other positive reactions, and the other had reactions to other metals.


CONCLUSIONS
Positive patch-test reactions to platinum are rare. However, platinum jewelry may occasionally provoke allergic contact dermatitis.
Fowler
Joseph F
JF
Division of Dermatology, University of Louisville, Louisville, KY, USA.
Perryman
Jennifer H
JH
Quinlan
Branden
B
D002712:Chlorides / Q000009:adverse effects*; D017449:Dermatitis, Allergic Contact / Q000175:diagnosis / Q000453:epidemiology / Q000209:etiology*; D005260:Female; D006801:Humans; D008420:Manufactured Materials / Q000009:adverse effects*; D010328:Patch Tests; D010984:Platinum / Q000009:adverse effects*; D017671:Platinum Compounds / Q000009:adverse effects*; D015995:Prevalence
D002712:Chlorides; D017671:Platinum Compounds; C036919:tetrachloroplatinate; D010984:Platinum