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Related Experiment Video

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Serious head trauma preceding essential tremor: A population-based study (NEDICES).

Julián Benito-León1, Elan D Louis2, Andrés Labiano-Fontcuberta3

  • 1Department of Neurology, University Hospital "12 de Octubre", Madrid, Spain; Centro de Investigación Biomédica en Red sobre Enfermedades Neurodegenerativas (CIBERNED), Spain; Department of Medicine, Complutense University, Madrid, Spain.

Journal of the Neurological Sciences
|May 11, 2015
PubMed
Summary

Serious head trauma is linked to a higher likelihood of developing essential tremor (ET). The risk increases significantly when head trauma occurs after age 40.

Keywords:
ElderlyEpidemiologyEssential tremorHead traumaPopulation-based studyRisk factors

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Area of Science:

  • Neurology
  • Epidemiology
  • Trauma Research

Background:

  • The relationship between head trauma and essential tremor (ET) lacks formal investigation.
  • Essential tremor is a common neurological disorder characterized by involuntary shaking.

Purpose of the Study:

  • To investigate the association between serious head trauma and the incidence of essential tremor.
  • To determine if head trauma is a risk factor for developing ET.

Main Methods:

  • A population-based study, the Neurological Disorders in Central Spain (NEDICES) study, included 274 ET cases and 3201 controls.
  • Serious head trauma was defined by loss of consciousness, hospitalization, or emergency department visit.
  • Logistic regression analysis was used to assess the association, controlling for relevant factors.

Main Results:

  • Individuals with a history of serious head trauma had a 52% increased likelihood of having ET (OR 1.52, p=0.04).
  • The association between head trauma and ET was stronger when the trauma occurred at older ages.
  • Specifically, head trauma at age 40 or older showed a significant association with ET (OR 1.61, p=0.04).

Conclusions:

  • Serious head trauma, particularly in individuals over 40, is associated with an increased risk of essential tremor.
  • This finding suggests a potential link between traumatic brain injury and ET pathogenesis.
  • Further research is warranted to confirm this novel association and explore underlying mechanisms.