I'm glad I saw this topic and read it. I have been trying to find the right word for these type of feelings. When I saw "vibration" that was it!! I have this feeling alot lately after the spells of what seem like tremors to me or spasms. I get the vibration in my stomach, back, arms, legs and sometimes in my head too, but not all the places at once.
Lately, I have had more of these spells where my muscles are moving and I can't stop them. The first time it was my whole body, then 4 times it was just in my legs and always ends with a backache and leg pain. Today I was lying in bed resting and I reached for a ciggeratte( I know I don't need to smoke) but my hand and arm started shaking and then both hands, arms and my head as well. After that I have been having the vibrations in my head, arms and stomach most of the day.
Thank you for giving me the right word to describe this feeling. I hope you all have a good nite and take care.