Hi: I have Benign Paroxysmal Positioning Vertigo. The Epley maneuver is what they do and can teach you how to do it It works. Sometimes it takes a couple tries and you can feel wavier, but sometimes it works right away. Your movement is what makes it ebb and flow. You can get a virus that can do that as well but typically that clears up. It has been so helpful to be able to do the maneuver when I feel it coming on.
I hope this helps!