[jvolkman]

I do wonder about how many kids that think they have peanut allergies (or otherwise) have actually lost or outgrown them.

My anecdote: our daughter was diagnosed with a peanut allergy at ~7 months of age. She developed hives after eating some peanut butter and we confirmed the allergy at our allergist's office with a skin test. We were told to give it another shot in ~5 years, but to avoid all nuts and carry an epi-pen in the meantime.

But just about a year later after an insurance change, our new pediatrician encouraged us to do another test with our new allergist. A blood test came back negative, and the ultimate test - eating increasing amounts of peanut butter in the allergist's office over a couple of hours - was fine.