In bed it never occurs. The tremor does not occur during rest, only when I'm moving. I have had neck problems in the past, but, no pain for the last couple of years. I do have a herniated disc in my lower back (and congenital disc disease), which may also be the source of the tremor. My father did have tremors (only in his hands) during the last 10-15 years or so of his life, but, it wasn't parkinsons. I did have tennis elbow some years ago with the source being my left arm. A few message sessions took care of this tennis elbow. I do feel like I'm losing strenght with my left arm. Always served well with aces, but, strength seems to be lacking. The position when my arm is worse when I'm standing, walking, and swinging my arms. It's odd, but, when I'm standing, not walking, and swinging my arms, it does not affect me. As I'm typing, holding out my left arm, and moving side to side, it does not affect me. I can hold my left arm for an extended period of time and no shaking. One other thing, I did have Ciguatera about 7-8 years ago, but, no lasting effect. BTW, my hand or finger dexterity is quite good, with no problems. I still play alot of tennis (incidentally, I'm a natural right hander but I play tennis with my left) but, it feels like I dont swing as hard as i used to. If you need more details please advise.