Not to be a know-it-all, but technically fear of heights is not Vertigo, its called Acrophobia. Related to CSA? I don't know, but anything's possible in our F-ed up world.
Vertigo is a malfunction of the balance mechanism of the inner ear, which produces a sensation of spinning and falling through space. I had an attack of it a month ago, and it totally disabled me for three days, until it finally passed.
"Stand, in the end you'll still be you,
One that's done all the things you set out to do.
Stand, there's a cross for you to bear,
Things to go through if you're going anywhere."Sly & the Family Stone