I also don't see how it's vertigo, unless he has these sympotms all the time, not just when lying in bed.

I've been Dx with PVD. I have problems with balance because of my inner ear (right). I wasn't sure what was going on, but I felt "drunk" all the time. The feeling where everything is spinning, and severe migraines scared me a little, until I went to a doctor. I had a lot of tests done, until I was finally diagnosed with PVD, which in terms could be called Vertigo.

But anyway...