In my world, ET stands for Essential Thrombocythemia. That's a myeloproliferative syndrome similar to the Polycythemia Vera I have, which makes extra platelets. These CAN cause neuro abnormalities, but most of mine were there before I got Polycythemia Vera, so while i may make things worse, it's not the essential neurological cause. It guess ET in this world (the forum) is Essential Tremor. I do not have that, but the wild jerks I definitely have.
My horrid lately experience is that, while my jerks have been under control with Mag and Calcium, since the fires poisoned my world they came back in full, horrid almost uncontrollable force. I agitated for a shot of Kenalog to reduce inflammation, and it helped, but now I am just worn out and worried about what's next. I can only get Kenalog twice a year, I think, and the fires are going to go all summer. Right now, no smoke....but fires burning heavily and spreading to the south and north.