"That I'm not really sure about but we're about to do some tests that will hopefully help me figure that out. But you do have a concussion, so sitting still is key. When you're up to it, I'll give you something for the pain. And if you need to throw up.." she pointed to the pan beside the bed.
She came over to one side and pulled out her pen light thing and held up her finger in front of his face. "I need you to follow my finger with just your eyes okay? So.. have you been feeling dizzy a lot lately?"