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Related Experiment Video

Updated: Dec 3, 2025

MRI-guided Focused Ultrasound Thalamotomy for Patients with Medically-refractory Essential Tremor
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Essential tremor: Is the word "essential" really essential?

Abhishek Lenka1, Elan D Louis2

  • 1Department of Neurology, MedStar Georgetown University Hospital, Washington, DC, USA.

Parkinsonism & Related Disorders
|October 29, 2020
PubMed
Summary

The term "essential tremor" is debated due to new research. Despite inaccuracies, the article suggests retaining "essential tremor" for historical continuity.

Keywords:
EssentialEssential tremorMovement disordersTremor

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Area of Science:

  • Neurology
  • Movement Disorders

Background:

  • Essential tremor (ET) is a common movement disorder with increasing research into its causes and characteristics.
  • Recent advancements have raised questions about the accuracy and appropriateness of the term "essential tremor".

Purpose of the Study:

  • To re-evaluate the historical basis and current validity of the term "essential tremor" in light of new scientific understanding.
  • To discuss the pros and cons of eliminating the word "essential" from the nomenclature.

Main Methods:

  • Historical review of the term "essential tremor" and its etymological roots.
  • Analysis of current research on ET etiology, pathogenesis, and clinical features.
  • Discussion of the implications of retaining or removing the term "essential".

Main Results:

  • The term "essential" historically implied idiopathic origin and a single-featured trait, both of which are now challenged by research.
  • Studies suggest ET is neither truly idiopathic nor a single isolated feature, making the current nomenclature technically inaccurate.
  • Both eliminating and retaining the term "essential" present distinct advantages and disadvantages.

Conclusions:

  • While the term "essential tremor" is technically inaccurate based on current knowledge, it is recommended to retain it due to the lack of a flawless alternative.
  • Maintaining the historical nomenclature respects the long-standing tradition of naming this movement disorder.