Last week I went back to the doctors for more tests - now they've really narrowed it down, and provided a few answers.
Firstly my tinnitus is not caused by exposure to rock music at festivals, it seems there's something blocking the signal that runs through the bone in my ear to my brain. This block is microscopic, non malignant (by now it should have grown through the bone it is housed in if it was) and has been growing really slowly for decades, until it bumped against the nerve.
So my problem has been solved, but as it is so tiny it was missed on the first MRI, but it being in the ear it effects balance, co-ordination, and hearing, etc. Plus provided too much 'noise' for my brain to deal with leading to some effects on the cerebellum.
But not the loss of feeling in my hands/feet - that's been put down to 'wear and tear'.
The bad news is - its effects are 'enhanced' by alcohol or changes in chemistry in the brain - so now I have to sort out what I can eat, drink, etc without worsening it and what makes it loud.
As well as this, I have to see an audio specialist about having white noise filters fitted to me ears - to aid sleeping, and during tested some long wave frequency audio really knocked me out - so I also need to wear ear plugs.
The doctor said after the latest MRI last night which zoomed in on the bones effected in my ear they will decide how to progress with three options:
1. keep an eye on it and leave it.
2. cut a 'hatch' in the back of the skull, move the brain out the way and operate .
3. Use a gamma knife (a fine pin point of gamma radiation) to zap it, seems there's a bloke in Bristol who is one of the best in the world at this. Too many computer games as a kid I reckon.