Occupational allergic contact dermatitis to silver and colophonium in a jeweler

The aim of this study was to determine any occupationally relevant allergic contact sensitizations in hand dermatitis in a jeweler. Patch test with European Standard, vehicle, medicaments, and metal series (Finn chambers on Scanpor) was performed. Readings were taken on day 2 and day 4. Allergic positive reaction to colophonium 20% pet and silver nitrate 0.5% aq was detected. The contact sensitivities to silver and colophonium seem to be occupationally relevant in this case.