Sleeping for a long time after a blow to the head is a sign of a CONCUSSSION, Nausea, sleeping, kaleidoscope vision and weakness are all signs of a bad one.Not yet.
Maybe later.
I kissed an OAK tree running off of the bank behind the Campground at the Chimneys in the Smoky mountains once and had a super concussion, everything but convulsions for four days.