What the eff happened?

Something that has puzzled me for many years: why do so many people think I'm a liar?
My parents did what all good parents are supposed to do. They got in touch with my school every year, made sure all my teachers knew about my allergy, dropped off a doctor's note saying I should be able to carry an EpiPen, and generally reminded everyone not to poison their daughter. So what the eff happened to convince a very vocal portion of the community that I'm boldly faking it for attention???
I've had teachers who were wonderful, and I've had friends who were wonderful, but I've also been approached by people who want me to know they think I'm a lying sack of crap.
One of my assigned guidance counselors, when I asked her to help me with some kids who were taunting me about peanuts, told me that it was because they knew what I was saying was ridiculous, and if I dropped the whole peanut thing and ate school lunch like a normal person everyone would like me again. My art teacher, although she seemed to like me, never understood why I wanted her to check ingredients lists, and I was constantly storming out of the art room under an irritated black cloud because she'd brought us yet another snack I couldn't be in the room with. Kids have come up to me in the lunch room or the halls and asked me why I'm so dramatic about my allergy, and I've been issued one or two detentions, which I opted not to show up for, because I left a room to go to the nurse to get treatment for a reaction the teacher didn't believe I was having. So what did I do to convince these people that I'm a liar?
And not everyone stops the conspiracy train with the idea that I crave the spotlight. In a terrifying shouting match with a teacher I was very intimidated by, I was asked why I felt the need to control everyone around me. All this because I asked him if, this time, he could bring us a candy I could have too. And when I got my service dog the shit really hit the fan, with people snarling at me that it must be wonderful for me to be able to bring my pet to school.
I have wondered for years and I am really at a loss for explanations, what did I do?!?!?!?!
For a while, even after leaving school, I secretly feared I was all the things they'd said I was. That subconsciously I really did want attention.
Then I read about the conflict in Florida.
For those of you who didn't follow it, a group of parents decided to protest the security measures an elementary school had put in place to protect a six-year-old with peanut allergies. And I mean protest protest, as in, they stood outside with signs. Because of a six-year-old girl.
So now I'm hopeful that maybe it's the world that's crazy and not me. Kind of like that line from one of the more poorly-written episodes of Star Trek, "If there's nothing wrong with me, maybe there's something wrong with the universe!"
Well, maybe there is something wrong with the universe if it's so determined to be angry with allergic children. So what can I do to change the world, besides blog about it?