I have also been having vertigo issues for the past nine months
or so. Have tried several medications such as Zyrtec D,
Flonase,
Nasonex, Xyzal....also nasal rinses, and some vitamins and herbs...nothing works for long. Today the doc decided to start testing me for allergies to try to get to the root of the fluid and swelling in my ears. Your results sound interesting. I have in the past from time to time has what I think are fever blisters around the corners of my mouth.