Has anyone experienced internal vibrations?

Yes. Do you have POTS (postural orthostatic tachycardia syndrome)? It can certainly occur with that. Did you have Covid? This may be a helpful article: https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10759066/

I started experiencing inner vibrations in my body, about a week now, when I settle into bed for the night. I was in fear that they were tremors from the earthquake we recently had in New York. Our local news would mention a new tremor that took place at the epicenter in New Jersey but never on Long Island so I had to come to the conclusion that its me! Why? I was glad to see that I am not the only one going thru this but its very disturbing. I'm thinking it's anxiety due the earthquake and that it could happen again at night. I already suffer from time to time with auditory hallucinations and sleep paralysis. This is no fun!

When I’ve had ‘tremors’ and thought maybe was anxiety, it was made better by doing calming breath work, which I’d been taught previously.
Most of my ‘tremors’ have been from either my EPI (pancreatic insufficiency) which has to do with ability to digest food properly (doc figured it out, not obvious), OR from too much caffeine from soft drinks. (Caffeine in tea doesn’t have same effect, and doc says it is different…also that there are chemicals in soft drinks which could cause effects…). [I’ve heard of people who say Tremors can be related to constipation issues.]

Are you spending a lot time sleeping or sitting near a smart meter (e.g., meter for electricity for house)? I had my smart meter removed from the outside of my home (was located just on the other side of the wall from my headboard) and replaced it with a non-smart meter that has to be manually read each month for an extra $20. per month. I haven’t had the internal vibrations since then.

I get spasms at times and I could definitely describe them as vibrations. Are you sure you are not getting Spasms.?

I have been having the same thing. Just going to be checked out by my doctor in a couple more weeks. Wish I knew what is causing my insides to vibrate as it is scary not knowing why it is happening. Any info will be appreciated. Good luck to you.

i’ve heard of numerous people who have had tremors from
Parkinson’s disease

I too have internal vibrations - started 6 months ago - during the day when sitting/relaxing feel vibes go through feet up to my backside - day time no bother can tolerate - Bedtime has been a nightmare - from head to toe - I have used pillow to raise my head, pillow under my legs which lessens the vibes - seen doctor last week - he said this is a mystery and no one knows the hows and whys etc - he has given me Endep to take at night - helps with the nerve ending - time will tell also a Health practioner suggested I take Alpha Lipoic acid 600mg twice daily after food - I am yet to purchase this. Not much of a help but maybe you could find out more about these meds - I do feel so for you its not good

I have this as well. Doctor doesn't seem to want to address this. I read somewhere on line where someone thought it was related to having cat scan with gadnolinium. I have had that cat scan more than once but that is just someones speculation.

Valarino, trouble is seems no one really knows all the wys and wherefores, my doc says its a mystery - its so annoying mainly at night - no chance of sleep whilst the vibes are going on inside body - sleep deprivation is not good