I've had many similar symptoms as you in the past 20 months...Twitching, burning feeling on skin, dizziness, etc. I did get 2 brain MRI's and 1 cervical spine MRI. Unfortunately, it has not answered any of my questions. The MRIs came back normal. I also saw a Neuro 3 times in the past year and a half: She's telling me my Sx are caused by anxiety.
Now the main thing that is bothering me is that some of my fingers are twitching. It freaks me out so much. I had my GP give me a referral to get an EMG. I have an appointment only in April..I have two months to wait.