Jerry, as a fellow vertigo sufferer, it's sometimes hard to explain to someone who has not experienced a real nasty event, how bad and scary / unsettling an episode can be. Most of my episodes are mild, but every several years a bad one will hit out of nowhere. After a horrible event a few years ago, a doctor showed me a video showing how to stop or at least temper the event if you sense one is starting. I'm sure you can find it online by googling "exercise for vertigo". I have used it a couple of times since, and it really settled the event down. The one I've used with success is the one by Dr. Foster... Stay well...