Invisible I think you posted on my wall about internal tremor.

I had what felt like an internal tremor while at rest and it was really only on one side of my body which was left side (shoulder, head, neck area). And I felt it more at rest than anything else. Turned out to be a nerve that was impinged and spasming. It also sat really close to a blood vessel and the pressure on both is what was causing the sensation for me.

I hope you find some answers.