I know there's a rule that you're not supposed to give liquids to someone who's been seriously injured. I can't find out why this rule exists. I mean, if the person's unconscious, fair enough, they could choke/drown; but if they're conscious, what is it that could happen if they drink something? If my character is found about three days after his injury (a concussion + blood loss from a stab wound), would it be safe to give him something to drink then? I mean, at some point, people are going to need to drink something, right?
(This is a wilderness survival situation, so waiting to get the patient to a doctor won't really work.)
Thanks for any help.