Metallic platinum, as used in jewelry, photography, dentistry, and the chemical and electrical industries, rarely causes contact dermatitis although ACD due to a platinum ring has been reported. [3] ...

Of 446 patients tested, 2 (0.44%) had positive patch-test reactions to platinum and 2 had “doubtful” reactions. The positive reactions were graded + and ++; these two patients were Caucasian females.