when I was a kid I was really allergic, to loads of things:
dust mites (chronic asthma)
nickel
sugar
all dairy
wheat
additives (all colourings, flavourings and preservatives)
potatoes
citrus fruits
etc etc etc
it was not fun being a child who couldn't eat chocolate or crisps or sweets or bread or anything really. I was very skinny
when I turned teenage I grew out of the allergies and went mad eating everything under the sun. I've never really lost the weight since
but recently my allergies are making a reappearance. My allergic reactions have never been fun - massive itchy hives all over my body, swollen face etc. I used to have to carry around antihistamines incase my tongue swelled up. Nowadays, I get more facial rashes and swellings. Not fun if you're at work, and your face just randomly swells up and goes blotchy. People have been known to stare
I'll always be really allergic to every metal other than sterling silver though, I think. If any other metal is touching my skin for more than like a minute, I come out in a huge swollen scabby rash. nice.
and I've still got the asthma