I ask because today I met someone who avoids peanuts because the last time she did her throat tingled and her lips swelled...she just avoids them and thats that.
My mum has loads of foods that make her mouth tingle if she eats them (not always but sometimes), mainly fruits, and also walnuts but she doesn't really make a big deal of it and doesn't do anything to avoid them really apart from the nuts. If she feels something affecting her she just stops eating it. She can eat, but not touch, other foods like citrus. She's never seen anyone about it.
It seems to me that there must be loads of people who eat/touch something, have a reaction and just think 'oh I'll just avoid that from now on then' and never see a doctor or specialist. It sometimes makes me wonder if I must seem really over the top to other people when I tell them that we have seen specialists etc with ds, and I just wonder how many truly allergic people there are who are never 'counted' iyswim? The problem might be much bigger than we realise because half of those who react to stuff just get on with it and don't really worry about it.
Maybe that's the reason that truly serious allergies, especially to anything other than nuts, are not taken as seriously as they might be? Is it that there are many people who just have a mild reaction and then avoid the cause and don't see it as a problem (whether they should do or not)? I've heard loads of anecdotes along the lines of 'oh yes, x couldn't eat egg as a baby but we just waited until she was a bit older and she was okay with it then'...On the other hand, imagine if everyone did seek medical help - waiting lists are long enough as it is!
Just thinking out loud really, but I'm amazed at how many allergies come out of the woodwork once you start talking about them...