I also had a virus, then fullness that brought on an MRI and the AN dx. I had extreme pain around my ears and in front of my ears. About one month later I developed facial numbness on my left side and my AN is on the right. I even began to wonder if they got it wrong on which side my AN is on.
However, I first went to my ENT who sent me to a neurologist to look for TIAs (small strokes). More stress! The neuro ruled out TIAs but could not explain facial numbness. Starting talking about the trigemenal (spelling?) nerve was the only thing that could produce the numbness. He gave me a neurotonin (again spelling?) and after taking one of those I realized I could not live on them. Made me very dizzy and groggy - VERY!
So, I thought I had had an infection of the soft tissue many times in my ears and maybe the swelling around the facial nerve that runs through there caused some of the numbness. PCP prescribed me 27 days of antiobiotics. The numbness lessened but was still there.
I got a stomach bug on New Years Day and was very sick in bed. At some point, the two muscles that go from the base of your skull under your ears to the collar bone became tight as rocks and hurt extremely bad. So...the next day when I felt better (24 hour stomach bug - thank goodness:), I looked up what was located in that area of your neck. I kept researching and came across some information about your SCM, the sternocleoidmastoid muscle. There is a faction that believes the SCM muscle tightness, swollen, injured muscle can cause numbness in your face. I couldn't turn my head all the way to the side as I used to as well.
I began to take .25 mg of Xanax as a muscle relaxer just to test it out and have been able to almost rid myself of the facial numbness. My doctors did not have a clue and the meds they wanted me to take were worse than trying the Xanax. I want a muscle relaxer and apparently Xanax achieves that.
Maybe its nerves, but nerves/anxiety causes you to tense your muscles too. I carry my tension in my neck and always have. I began to notice that since I became dizzy a few years ago (always told it was allergies and then was dx with Endolymphatic Hydrops, which this year was changed to the AN dx), I hold my head stiffer so that I do not turn my head too quickly and get dizzy.
So, maybe it is the muscles in your neck. I am not one to lean on the "holistic" side of medicine, but I can get relieve from the numbness with my approach and the doctors couldn't give me relief. My brother is a licensed massage therapist and states that the theory is technically correct. But, most doctors won't go with the SCM muscle causing numbness.
I hope you find some relief soon, it was driving me crazy and I was becoming more depressed about all of this. My right side AN and then left side numbness that was unrelated. AAGGH!
Lisa