When a person with FD is in "crisis," their body loses control of blood pressure, heart rate, and body temperature, among other things. When talking about drawing this comic with people at the Dysautonomia Foundation, they emphasized the green face because FD people in crisis feel very nauseous. I suggested also drawing a garbage can next to the bed (like if they needed to throw up). I learned that people with FD cannot actually vomit because of an operation they all have. Basically, because they can't swallow normally (they eat via stomach tube) if they threw up it could get into their lungs be a serious problem, so the operation makes some kind of knot in their intestines (if I'm remembering correctly). Meeting with the Foundation and asking questions leads to very educational conversations for me and prevents me from making slightly "incorrect" drawings.
Pretty much all of my Daily Misfortunes are like the "crisis" in the first panel of this week's FD comic. But that's one reason the Foundation wanted me to draw their comics - I can create a somewhat lighter tone to bad situations.