[elight]

IANAD but several symptoms sound like possible fits for Huntington's Disease. However, given you've had these symptoms for 18 years, HD doesn't sound too likely.

HD could explain the fatigue, muscle tension, and reduced motor skills. However, it would likely also (but not always) be accompanied by other behavioral changes and cognitive changes.

You're also less likely due to age but i wouldn't rule it out on that basis from experience.

HD would not account for your numbness and dizziness.

Also curious if Wilson's Disease could be a more accurate fit. Fortunately, it's treatable.

http://en.wikipedia.org/wiki/Huntingtons_disease http://en.wikipedia.org/wiki/Wilsons_disease