I think he'd know if he lost consciousness, because in my experience people at the ski hill come pretty quickly to ask if a kid is OK after he fell. He told me no one, including the friends he was with, got to him before he was back on his feet, which makes me think he sprang up pretty quickly. My gut feeling is that he's a little foggy, but that could be the headache and the sleep deprivation. I don't think he's got a severe injury. It seems like we'd see more signs than a headache that seems to be getting better and one incident of vomiting almost 24 hours later. I think I'll keep a close eye, and see what the neuro people say on Thurs.