Not been here for a while, but re: pitches and vertigo, I had an attack of vertigo walking over a bridge. I felt giddy and off-balanced. It was the first time, so this was more disturbing than the actual experience in some ways.

I have tinnitus. I wonder, therefore, whether the OP might also have it to some degree and the pitches and tones irritate it to aggravate her balance.

I don't know if this is likely (or correct), just my own idea.

Edited by trevek (05/23/11 04:38 PM)
See how well I block your punches with my jaw!!

Supporting everyone saying "nuts to cancer"