I sometimes suffer from bouts of vertigo. Not sure what brings it on, but it usually doesn't last more than a week. Except for a few years ago, just before I was diagnosed with LADA. Come to think of it, that was the first time I ever had vertigo. My regular physician thinks it's fluid in the ears from upper respiratory infections and colds. But I've had those in the past, before my Type 1 diabetes, and I never got vertigo. Perhaps it's age. My mother also gets bouts of vertigo, sometimes for weeks. I have a theory of my own. I notice that vertigo worsens when I drink a large amount of coffee. When I got vertigo this week, I quit drinking anything with caffeine, and the symptoms are slowly fading. Meanwhile, my hot beverage in the morning has been White tea.
That's a bit scary I bet. Hope you can figure it out without too much trouble.