This licking problem is often a sign of seizure activity. So, you should go ahead and give your vet a call tonight to see if they want to see him. It can also be a sign of a tooth or mouth issue like an abcess or root tooth infection.
But since you are seeing the disorientation, I would lean more strongly towards a seizure.
Go ahead and give your vet a call.
Let me know if you still have specific questions.
