My 20 month old started staggering while walking today. we figured he just needed a nap, but after waking an hour later, he was staggering worse. he looked intoxicated to be honest, falling over, crying every time he fell. Now, he is still staggering, barely able to stand up and extremely mad! He has broke a pen in half, throwing a fit like I have never seen! What could this be? It started out of the blue, he has no fever, no cough, no runny nose, but does have tubes in his ear!