http://wisegeek.com/what-is-a-vasovagal-response.htm
Not when Wesley fell, but four hours later.
I texted Terra and told her what happened (he fell and smashed his face on a stone floor yesterday), she asked if he broke his nose. I chuckled but called him in and looked at his face. Uh, yeah, it was all swollen on one side. And suddenly I felt sick, sweaty, so nauseous I couldn’t get up, etc.. I’ve never fainted but I assume that’s what it would feel like just before.
I can remember a couple other times in my life it’s happened… When my parents caught me smoking in my room at about age 13. When I was with Terra after her tonsillectomy. Probably others I’m forgetting. Yet other gruesome stuff in my life (I’ve done some hospital sits, watched my dad die, nuff said), it didn’t happen.
Anyway, so, there’s a name and reason for it. Nice.