anaphylaxis
"This medication was literally a life saver for me. I have had severe allergies to peanuts since I was a child. I mean, where I couldn't even touch peanut m&ms because they had peanuts inside the chocolate shells or sit in a seat at one of those places where you throw peanut shells on the floor or whatever as you eat them. I have had to use my epipen in that situation once (because I didn't want to seem different and I didn't think that just sitting in a seat, which I assumed had been wiped off) would affect me. I have also had to use it visiting my parents when my grandfather was alive because he loved peanuts and I'd sit where he's sat and had to use it again. I always carry two on me at all times."