Hi,
I wish there was more research to determine if Covid vaccines can initiate internal tremors/vibrations. I began with the silent or internal vibrations a short period after my second Covid Vaccine. I didn't know what to do about them and waited awhile before I could see a Neurologist. They are full body vibrations at times and other times it is only my feet and lower legs. The Neurologist started me on Alpha Lipoic Acid 600 mg daily. I took it over a year and eventually it calmed down, although not totally gone. It is worst when I am trying to fall asleep or during the night, they are present when I awaken. During the day, they are not as noticeable except for my feet. Then I got my 6th Covid Vaccine booster and a week and a half later, they came back in full force. Very discouraging. In my mind, the vaccine may have been the cause. I also have much louder ringing in my ears during the same period. Neurologist said that anxiety can also initiate them but although he has heard about this, he is uncertain of the cause. I felt like I was going crazy trying to explain what I was feeling to my physician. Sometimes I thought there must be a huge machinery room on the floor below me in the hospital because I could feel it vibrating and had to check with others to see if they also felt the vibration, which of course they could not. It is not painful but very unnerving and interferes with my sleep and makes me feel more anxious. Hope we all get relief.