Last night, I had my first experience with an anaphylactic allergic reaction. My throat started to tighten. My skin became red and itchy. I began to cough, and my breathing sounded higher-pitched.
After several minutes of wondering if I was imagining things or overreacting (including calling the allergist to make sure I wasn't crazy), I realized my throat was indeed closing and went to self-administer my epi-pen.