Hi @jbug, Welcome to Connect. There is another discussion that you and other members here with similar internal shaking systems may want to join.

> Groups > Brain & Nervous System > Monthly shaking episodes that continue to progress
-- https://connect.mayoclinic.org/discussion/monthly-shaking-episodes-that-continues-to-progress/

I’m also tagging @hopeful33250 to see if she might have some more thoughts. You mentioned that you have seen numerous doctors but they have not been able to come up with a diagnosis. Mayo Clinic is very good at diagnosing hard to diagnose condtions. If you would like get a second opinion from Mayo Clinic, you can find the contact information for the Minnesota, Arizona and Florida campuses here http://mayocl.in/1mtmR63.