I can understand how you feel as I have numerous neorological symptoms.
I was diagnosed with Chronic fatigue 20 years ago and only 18months ago did I realize that I was gluten intolerant. I didn't have a diagnosis but as soon as I went on the diet, all my stomach problems subsided. Unfortunately my neorological ones didn't and I suffer with bad muscle weakness which lead to tremours, twitching and shaking.
Over the past 10 years I have taken different supplements and one which I take regularly is Pantothenic acid (B5). 6 months ago I started to get excrutiating pains in the head which left me unable to speak, I thought I had a tumour as I also went deaf in one ear. I eventually had an MRI scan which showed I had inflammation of the Menancoccal lining of the brain, which my dodctor couldn't explain. Anyway to cut a long story short I have found out that my diet, which is rich in Brown Rice and also I drink Rice milk, together with the B5 is making my head pains worse or could be causing the problem. I went onto google and saw the symptoms for overdose on Pantothenic acid which mirrowed mine. The only conclusion that I can come up with is that I must now be ingesting the vitamins in my diet as I have been gluten free for 18months and the Pantothenic acid is just too much for me to cope with.
I still have all the neorological problems, like twitching and tremours, pounding in the head. I am exhausted most of the time and now that I cannot eat Brown Rice its another blow because the diet is even more restricted as I am intolerant to Soya, Milk Oats, Maize, goats milk.
The B5 acted like a steroid as it feeds the Adrenal glands, so I am going around like a rag doll at the moment.
Is there anyone else who sounds like this?