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Updated: Jun 13, 2026
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MRI-guided Focused Ultrasound Thalamotomy for Patients with Medically-refractory Essential Tremor
Published on: December 13, 2017
Longitudinal Intention Tremor Trajectories in Essential Tremor: A Comment
Muhammad Saqib Khan1,2, Syed Huzaifa Khan1,2
1Khyber Medical University, Peshawar, Pakistan.
Tremor and Other Hyperkinetic Movements (New York, N.Y.)
|June 12, 2026
Summary
Essential tremor intention tremor severity may increase over time, but this does not confirm cerebellar degeneration. Patient outcomes vary significantly, highlighting phenotypic differences in essential tremor.
Area of Science:
- Neurology
- Neuroscience
- Movement Disorders
Background:
- Essential tremor (ET) is a common neurological disorder characterized by tremor.
- Longitudinal changes in intention tremor severity in ET are not well understood.
- Cerebellar involvement is often suspected in ET, but direct evidence is limited.
Purpose of the Study:
- To examine longitudinal changes in intention tremor severity in patients with essential tremor.
- To investigate whether intention tremor worsens over time in ET.
- To explore the relationship between tremor progression and potential underlying cerebellar pathology.
Main Methods:
- Prospective study design.
- Longitudinal assessment of intention tremor severity.
- Analysis of tremor trajectories in a cohort of essential tremor patients.
Main Results:
- A significant group-level increase in intention tremor severity was observed over time.
- Substantial heterogeneity in tremor progression was noted, with many patients showing stable or improved tremor.
- The findings suggest that tremor progression in ET is not uniform.
Conclusions:
- While intention tremor may worsen in some ET patients, this does not automatically confirm progressive cerebellar degeneration.
- Phenotypic variability within essential tremor likely contributes to diverse tremor trajectories.
- Future research should integrate neuroimaging and functional measures to elucidate the link between tremor progression and cerebellar structure/function in ET.
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