I have gotten this for years...one red, burning ear. I had no idea what it was and once I had TN it just blends in with the other strange, and sometimes, painful symptoms. Well, one night on the internet I came across this:
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC3850925/
Call it what you will, it goes with all of my other TN and other cranial nerve symptoms.
Does anyone else get this?