The nerves are tricky little buggers. I don't find it at all unusual to read of your maladies, wfc. Like you I'm over 2 years out and continue to have weirdness on the left side of my face. In my case I think it was mainly from my neck dissection, but what's the diff?

Dunno about the B12 thing but it sounds interesting to check out. My RO told me that feeling changes - numbness, tingling, etc. - can occur up to 5 years after treatment.

Now isn't that a fun thought to look forward to?

Hang in there!