i had a severe reaction to a bee sting a few years ago. Stung on my thigh, and my leg swelled up to twice its normal size. Went to the Dr, who treated that, then gave me a whole bunch of tests to determine that I was allergic to honey bees...and not much else. Over the intervening years I have been given innumerable de-sensitivity injections which seem to be working---I now get almost no reaction to them, but the Doc still says I need to carry an epipen because of my previous history. The warnings they gave me about anaphylactic shock(Go straight to the emergency room.. Do not register or talk to reception, grab the first medical person you see and tell them that you are experiencing anaphylactic shock) made an impression.
I have to admit I am a little distressed by those who are getting epipens by falsely claiming a need. There is a shortage of these in the USA, and for the people who need them, they are a matter of life a death. To claim a couple because you might go backpacking? Sorry, I think that's unconscionable.