Greetings, bobcat, LisaRose, nonjwspouse, and Sail Away, and thanks for sharing your experiences. They have been very helpful.
When I first experienced vertigo, some 13 years ago, I had no idea what put me on the floor, unmovable, for 10 hours. A friend brought me Dramamine, which helped. I don't even know how I contacted my friend -- the phone was dead.
Doc said it was a virus.
Appreciate your concern . . .