Hi! I just posted a reply to another topic, but I think yours might describe me also. I'm wondering if you've had any luck finding out anything yet. Are you still experiencing the same thing?
My vibrations occur upon waking, or at least that is when I notice them...they might be occuring while I'm asleep and I don't notice. When I wake up, I vibrate for about 30 seconds. I can move during that time and I'm able to talk,etc. I just keep vibrating. I wonder if it's neurological, blood sugar, hormones, etc.....no clue.
It's not a really disturbing problem to have, but it bothers me because I'd like to know the cause and, of course, I worry that this is just a symptom of a larger problem.