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Related Experiment Videos

Assessing tremor severity

P G Bain1, L J Findley, P Atchison

  • 1MRC Human Movement and Balance Unit, Institute of Neurology, London, UK.

Journal of Neurology, Neurosurgery, and Psychiatry
|August 1, 1993
PubMed
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A new clinical rating scale reliably measures tremor severity in patients with essential tremor and dystonic tremor. This scale offers a more accurate assessment of tremor disability than accelerometry for clinical trials.

Area of Science:

  • Neurology
  • Clinical assessment
  • Movement disorders

Background:

  • Essential tremor and dystonic tremor are common movement disorders.
  • Accurate assessment of tremor severity is crucial for diagnosis and treatment.
  • Existing assessment methods may not fully capture tremor-induced disability.

Purpose of the Study:

  • To develop and validate a clinical rating scale for tremor severity.
  • To assess the reliability and validity of the scale in patients with essential and dystonic tremor.
  • To compare the scale's effectiveness against accelerometry and functional assessments.

Main Methods:

  • A clinical rating scale was developed to measure tremor severity at specific anatomical sites.
  • Four raters assessed 20 patients (12 essential tremor, 8 dystonic tremor) for inter- and intra-rater reliability.

Related Experiment Videos

  • Scale scores were compared with upper limb accelerometry, a self-administered questionnaire, and writing/drawing tasks.

    • Main Results:

    • The clinical rating scale demonstrated good inter- and intra-rater reliability.
    • Scale scores correlated better with functional disability than standard postural accelerometry.
    • The scale provided a more valid index of tremor-induced disability.

    Conclusions:

    • A clinical rating scale is a reliable tool for assessing tremor severity in routine clinical practice.
    • This scale offers a more valid measure of tremor-induced disability compared to accelerometry.
    • The developed scale can be valuable for therapeutic trials and patient management.