My teeth chatter (like when it's cold outside) when I am sobbing or when I laugh really, really hard for a long time. Could this be cataplexy? I told the sleep doctor about it, and he didn't interpret it as cataplexy. Whenever I'm crying, I always want to sit or lie down and curl up in a ball or in the fetal position...I feel like this is a pretty normal thing and not cataplexy.