Jack Shostak has had essential tremor since he was a child. A condition that ran in his family, essential tremor is a neurologic condition that causes involuntary shaking. For Shostak, simple activities like eating became a challenge. Duke Health neurosurgeon Stephen Harward, MD treated Shostak's right hand using highintensity focused ultrasound (HIFU). This short, outpatient procedure requires no incisions and offers immediate results. Today, Shostak’s righthand tremor is barely noticeable. He will receive HIFU treatment for his left hand at a later date.