Contact dermatitis from metallic palladium in patients reacting to palladium chloride

Abstract
1370 consecutive patients were patch tested with PdCl2 1% pet. 32 patients were positive; 29 also showed reaction to NiSO4, 470 patients were additionally tested with a metallic palladium disc 3 had a positive reaction, and none of them reacted to PdCl2 or NiSO4 pet. A positive patch test to PdCl2, pet is in most cases probably due to a cross-reaction with nickel in mikel-sensitive subjects. Patients positive to PdCl2 tolerate skin Contact with metallic palladium.