Thank you Jo for the website links. I've added the UPC Spine and Spine Universe to my Vertigo Favorites folder as I hadn't come upon them in my search. Both look to have some helpful information regarding chiropractic and the spine, specifically upper cervical and the atlas. I do have a chiropractic appointment this morning. I have been hesitant to have adjustments on my neck since a coworker suffered a stroke after having her neck adjusted by a chiropractor (her first visit and no, I'm not visiting the same chiropractor). The chiropractor I am seeing today doesn't twist the neck, but uses the drop table facing down. She is the only chiropractor to use this technique and has offered some relief in the past. Fortunately she had an opening this soon as she is often booked a week in advance.
As for the MRI brain scan for MS, Lee Ann, that was done in the series of tests run in 2001 which resulted in the essential tremors diagnosis.
I have signed onto another website specific to Vertigo which is more a place to share experiences with others and was shocked to see how prevalent this is and how debilitating it can be. My mother has had Meniere's Disease since a teenager and 3 of my 4 sisters have had at least one bout of vertigo-all in their mid 40's or later. Thank you for your support and advise. I'll be checking in regularly for feedback and to report on my path of treatment.