Hi Emsybobs, sorry you're stuck in a bad patch, I'm there with you if it's any consolation. I really impressed that you're managing to keep on working though, I seem to be having days off left right and centre.
I just read your post about going to see Linda Luxon and was worried that my post about migraine may have contributed to your new doubts - I'm truly sorry if I added to any of your concerns and if there's anything I can do to put them to rest then do let me know.
To be honest I was also a little worried about the way you spoke of finally getting rid of all of your doubts and getting a definite diagnosis by going to London. Please don't get me wrong, Queen's square is an excellent centre run by the UK's leading experts and I do recommend it. However I'd hate to think of you going there with false expectations.
Unfortunately it does seem that it is virtually impossible to get a definite, 100% certain diagnosis with the type of symptoms we have. Specialists, no matter how good, make diagnoses on the basis of probability and then response to treatment. In Ilia's case for example, Linda clearly thought Lab was her most likely diagnosis, especially in light of her improvement following increased activity. The VRT does seem to be working well for her which is fantastic, and will confirm to Linda that her diagnosis is correct.
I'm not trying to put you off going to see her, I'm sure you would come away with lots of useful info and reassurance. However it does seem that unless test results indicate a central problem, virtually everyone is sent for VRT as the first line treatment before any other options are considered. As you have already started VRT and have been referred for your official training by what seems to be quite a clued up ENT, I am unsure as to what you would stand to gain in terms of treatment by going to see Linda at this point, and I'm sure the cost would be considerable.
Sorry if that confuses you more, I'd just hate to think of you coming away from a consultation disappointed at just having been recommended to do VRT and feeling as though you'd wasted your hard earned cash. It may be far better spent further down the line if VRT doesn't give the improvements you'd expect.
Good luck with everything, and I hope the bad patch passes quickly,