MeShell, sending you a big old. Okie hug! Wish there was something I could do to help,,,when DH was diagnosed with Parkinson's he was a bit like you,,went to the GP who couldn't really give him a definitive answer,,so John saw the neurologist as a private patient,,at that time it cost about £150, but it was money well spent...he got his diagnosis and was transferred back to the NHS where he was under the same neurologist (go figure, lol). Have you considered going private?
Do hope you get an answer soon,,,xx b