The only things that have been proposed are brain surgery and deep-brain stimulation, as two possibilities. As we're learning more about Parkinson's, we now have to start learning more about essential tremors. With Parkinson's, we felt, in the research community, that there was greater need because it is progressing. But I agree with you; we now have to turn our attention to essential tremors, because so many people are being diagnosed with it.
For us, then, what is the cause? Is there a cause? What's a possible treatment? Is it similar to that of Parkinson's or not? We're still right at the beginning, really, of a non-surgical intervention possibility.