The clinical signs are characterised by exaggerated licking and chewing movements, with pawing at the mouth. Typically the discomfort is unilateral or worse on one side and can be episodic or continuous. In the episodic version the distress often occurs after eating or grooming and lasts between 5 minutes and 2 hours.
OMG - that's it!!!!!!! Mary, how can I thank you enough for this. We just simply have to meet someday.

I'm going to print off that page and talk to my vet again about B vitamin shot. I mentioned it to him a while ago but he indicated that there was no clinical proof that B shots work. When Max was at the vet recently I had the vet look inside his mouth and nothing was found. Yes, his teeth are in not too good shape but I'm not putting him through the stress of a dental right now.

What is IIRC?