altitude junkie and ti NeuroTalk.

What your experiencing "could" be symptoms of Multiple Sclerosis (MS) or at least vertigo and tremors are some of the symptoms of MS.

Did you happen to have a Brain MRI? If not you might think about getting one.

Both links are from the National Multiple Sclerosis Society. The first is about vertigo/dizziness and the second one deals with tremors.

http://www.nationalmssociety.org/sit...book_dizziness

http://www.nationalmssociety.org/sit...rcebook_tremor