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.

Jude
_________________________
"When I was a child
I caught a fleeting glimpse
Out of the corner of my eye
I turned to look but it was gone
I cannot put my finger on it now
The child is grown, the dream is gone
And I have become comfortably numb."
Pink Floyd