Thanks for all of your inputs Ladies and Gents, WG774 you make some interesting points. As mentioned, all of my test's have come up negative so stress could certainly be a factor.
However the only way I know to completely stop stress has the unfortunate side effect of a complete cessation of breathing !
Along those lines however, my neurotologist has recommended I try 'Klonopin'
in an attempt to 'relax the mind' somewhat and perhaps alleviate my symptoms.
Interested in your thoughts on that ?