fms, I'm exactly the same. I can't even wear yellow gold (hideous story from having my ears pierced but I won't grace you all with that!!) though for some reason white gold is ok and so is sterling silver and surgical steel. Belt buckles, jeans etc are all a big no no. Bra's are the worst - the metal bits on the straps drive me insane!!!!!
I've had this since I was a kid, had hayfever for as long as I can remember, am severely allergic to a lot of fruit (among many other things!!), have bite allergies and have just been diagnosed with asthma - and I'm only 22!!! I totally sympathise with you all - wouldn't life be so much easier without allergies!!!