I found some symptoms of your in my life last three year, and my doctors only talk about it - all ok. I have dizziness when i close my eyes (Romberg's sign), and i have tremors in all my musle, if i try too seriously to stretch it's (Cerebellar tremor (also known as "intention tremor)), i have low level nistag nistagm (eye movement) in night. And i am ready to bad prognosis of course.
*edit*
And hope in future, do not fogive abot STEM CELL research and genetics improvements. Unfortunelly i don't know wnat cells in our cerebellum and how seriosly it diffent from other nerve cell of our brain, which now already possibly to appear after stem cell therapy (of course only trial and often with animal now), and i would be very happy to listen to clever medic's specialst about it part of brain.

Take care, soory for english.