High-Intensity Focused Ultrasound Offers Immediate Relief for Essential Tremor
Essential tremor is a neurological disorder that causes involuntary, rhythmic shaking. Unlike the tremors associated with Parkinson's disease, ET is typically an “action tremor.”
HIFU uses multiple low-energy ultrasound beams focused to ablate specific thalamic neurons causing tremor.
Target Population
Primarily adults, especially those aged 60 and older, diagnosed with essential tremor.
Care Setting
Neurosurgical outpatient setting with awake patient monitoring during procedure.
Key Highlights
Essential tremor affects approximately 7 million U.S. adults, with prevalence increasing with age.
HIFU provides immediate, precise tremor relief without incisions or general anesthesia.
Procedure allows real-time testing and adjustment while patient is awake, optimizing safety and efficacy.
Guideline-Based Recommendations
Diagnosis
Confirm diagnosis of essential tremor to differentiate from other tremor types such as Parkinsonian tremor.
Management
Consider HIFU as a non-invasive treatment option for patients with essential tremor, especially those unsuitable for invasive surgery.
Deep brain stimulation (DBS) remains an alternative for some patients depending on age and medical history.
Monitoring & Follow-up
Perform real-time assessment during HIFU procedure by having patient perform tasks (e.g., drawing spirals) to evaluate tremor reduction and side effects.
Risks
Minimal risks due to non-invasive nature; local numbing required for head frame placement.
Continuous monitoring during procedure to minimize side effects.
Patient & Prescribing Data
Adults with essential tremor, particularly those with significant functional impairment and suitable medical profiles.
HIFU offers immediate tremor suppression with improved quality of life; treatment may be staged (one hand at a time) allowing brain healing between sessions.
Clinical Best Practices
Ensure accurate diagnosis of essential tremor prior to HIFU treatment.
Use awake patient feedback during procedure to precisely target tremor-causing neurons and minimize adverse effects.
Consider patient age, medical history, and tremor severity when selecting HIFU versus other treatments like DBS.
Educate patients and caregivers about the procedure, expected outcomes, and staged treatment approach.
The age-adjusted Parkinson disease death rate among US adults aged 65 years and older was 72.0 deaths per 100,000 standard population in 2024, lower than the 2021 rate, according to a National Center for Health Statistics Data Brief.
