When you go into the ER, one of the first things they ask you to do is rate your pain on a scale of one to ten, and from there they decide which drugs to use and how quickly to use them. I'd been asked this question hundreds of times over the years, and I remember once early on when I couldn't get my breath and it felt like my chest was on fire, flames licking the inside of my ribs fighting for a way to burn out of my body, my parents took me to the ER. Nurse asked me about the pain, and I couldn't even speak, so I held up nine fingers.
— The Fault in Our Stars
by John Green