ILLPN
Have you had tests to check if you have automonic neuropathy? The neurologist explained to me that those fine vibrations are the sensory nerves, small fiber. The sensation is not really any tremors, it is just that the sensory nerves are damaged, and they are acting sending wrong messages, and you get the sensation of vibration. My neurologist explained to me that the medicine will interupt the sensation
I did not understand what was going on for over 1 1/2 year.
And I too, think the feelings are frightening. I first started to get fine vibration in legs especially when I was exhausted and physically tired. Now the "internal vibration" as I call it , is there all the time. Spme times when I am standing on a surface, I can feel the vibration under my feet.
Some times when I am sitting, it feels like the chair is chaking.

I suggest the book Peripheral Neuropathy by Norman Latov, MD,PhD


Best wishes
Synnove