My grandson was at football practice (temperature was about 93 - 96 degrees on the field). He became dizzy, blurred vision, could not breathe, confused, right hand and arm seized up couldn t move legs from knee down. lips and eyes started tingling. Trainer put ice on back of his neck and his hand released. They had him drink 1-1/2 bottle of water and moved him indoors. He seems pretty much ok now. Been about an hour. He s tired now, but says he s ok. Should he go to the hospital and be checked out?