I don't have too much to add here but i'm a new allergy parent too so i'll tell my story. My son just turned 1 and has been confirmation tested positive for a bunch of allergies (dairy, eggs, peanuts, tree nuts). Dairy was a scary one when a couple licks of an ice cream cone sent us to the ER with face swelling and hives. Everything else has just been hives. Allergist says he may grow out of the eggs and dairy but nuts are usually life-long. I'm still not convinced of either nut allergy because he had them multiple times before a very minor skin reaction and doc even said the tests do result in false positives a lot. We're too scared to risk testing the limits though.
How are we handling it? Obviously being so young, we're still in control of everything he eats so we have not cleaned the cupboards or anything like that. He doesn't have a siblings so don't have to worry about that either. We read every label before buying or giving him food, we eat what we want but wash our hands and surfaces frequently, we're mindful of what we touched while feeding him, usually bring his own food from home when we go out, and we always have Benedryl and an epi-pen on hand just in case. His daycare is nut-free (as most are these days) so no worries there, we just have to circle the things he can eat on their weekly menu and his teachers read the labels of anything questionable. We're still learning how to deal and figuring it out as we go. This was actually one of my biggest fears before having a child, however irrational that may be, but i guess it's not as bad as i feared. None of his allergies are "touch it and goto ER" bad so we're lucky there and he's never had breathing issues during a reaction so we've never had to use the epi. We're just really hoping he'll grow out of at least some of them so his eating can be a little more convenient. It's just crazy to me how prevalent allergies are these days, especially with no family history of them. "Back in my day" (the 80s/90s) i didn't know a single kid with a food allergy and there was always a open tub of peanut butter in the middle of the lunch table.