Hi Amy!
It may have been my comments about tremmors and shaking hands that Jo read. I saw a neuro doc (not tos friendly) who said the hand shaking was nerve damage. I also get body 'jerks' - almost Parkinsons-like. The Neuro said these were muscle spasms of larger muscle groups.
My hands do shake worse when I have over-used my arms. But even at complete rest, they shake enough to where I cannot take a good photograph to save my life!
Nerve damage. Permanent? I duno. Hope not.