Essential tremor is the most common movement disorder, but many patients - even those with severe symptoms - choose to just live with it rather than undergo invasive treatments. But there soon may be a less extreme solution, one that could help other diseases as well.

Bob Delf inherited his piano and something else you won't notice as he plays: essential tremor. For now, he just lives with it and doesn't use medication.

For patients whose symptoms become severe, there are invasive procedures like Gamma Knife which delivers radiation to the affected part of the brain, and Deep Brain Stimulation, which involves surgically implanting electrodes and then sending pulses of electricity to calm the overactive brain cells.

Video shows the dramatic before and after results from some of the treatments, but Delf isn't convinced. But now Swedish Neuroscience Institute is testing a new non-invasive treatment using MRI and Focused Ultrasound.  Delf is paying close attention to this study and others. His future health depends on it.

The other thing and there is research to support this, if you have a glass of wine, it does calm the tremor down," 

As a winemaker, he's in the right business.

Essential Tremor and Familial Tremor are basically the same disorder. The only difference is that it's called familial when it's inherited.

In addition to essential tremor, the Swedish Neuroscience Institute is also conducting two other clinical trials using focused ultrasound, one for Parkinson's, the other for brain tumors.

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