Good questions, Carefulmom. So far, she's known right away that she was in anaphylaxis--and that's been every time, even when she little. The last reaction was different in that she didn't throw up at all or have any hives, as she had before, but she did have the bad taste in her mouth, then the tickly throat, then nausea, then the hoarseness (when her throat was swelling shut at the hospital--before the next round of Epi). She was also very "altered" about ten minutes into it, for lack of a better word. By the time we got to the hospital she wasn't coherent at all, which scared the hell out of me.
The asthma symptoms she's experienced so far have been pretty mild--no wheezing at all (even after running a few miles with me on Saturday!), just a little bit of a tight feeling in her chest, and that dry cough during the day, particularly if she's been outside. I think those sensations/symptoms are different enough that she wouldn't confuse them. And knowing the school nurse as I do (she was the only one who took my daughter's reaction seriously last year, and Epi'd her), she'd Epi her if she had ANY question. After what happened, I get a call if my daughter has a hangnail or scrapes her knee. No joke.
I'm hoping that a lot of this is because the part of the country we live in is having the worst spring pollen season in 15 years. I'm pretty miserable, too, and seasonal allergies are usually just annoying for me.
My daughter has had one mystery reaction that we finally chalked up to cross-contamination from a deli slicer (last time we got anything from a deli.) But she knew right away, after just a few bites of her sandwich. I Epi'd her that time. I hope it continues to be this clear-cut for her. But we will make sure her plan spells out the procedure clearly, particularly since she's changing schools (and school nurses) next year.