no no.. I think its zinc or something. Whenever I wear a certain belt without a t-shirt tucked into my jeans, i get a nasty reaction where the belt buckle touches my skin, the same happens with a chain I used to wear.
A mate of mine had a habit of going commando. But that soon stopped when it turned out the studs on jeans brought out eczema whenever it touched his skin. Also happened with his belt. And whenever his ankle-length leather coat touched his skin.
After going to the hospital and undergoing tests, turns out he's also allergic to green paint too.
Quite a few people are allergic to metal piercings apparently. Piercings are often available in different metals though. I wonder why people are allergic to metal though. And peanuts. What the hell is that about?