Santucci and colleagues reported that of 800 consecutive patients, none reacted to platinum on either patch or prick testing. [7] In contrast, they further reported four positive patch-test ...

Background: Positive patch-test reactions to gold that are without obvious clinical relevance are common. We speculate that titanium dioxide in cosmetics and sunscreens may adsorb gold particles ...

Since the goal of the patch testing is to pinpoint the cause of contact dermatitis, one or more reactions at test sites may occur. A positive test may show redness, bumps, mild swelling ...