they are kinda like children only fury and smarter they get tired and they can get cramps but if it last for more than a few hours id consider taking them to a vet
have you tried checking them for any ticks (not fleas)try a small some ticks have paralysis and lethargy for symptoms when they bite
do you give him any thing with caffeine or lots of sugar the busing around before could have been like a sugar rush
or possible while playing he smacked smashed or bruised his hand their reactions to pain may not be the same as ours siena would sleep in a dark place untill she felt better when ever she got hurt even if it was just a small scratch
i was just a little kid last time i owned a raccoon so i dont know if this helps any