Funding agencies: This study was supported by Fundação de Amparo à Pesquisa de Minas Gerais (FAPEMIG), Brazil. Maira Tonidandel Barbosa, MD, PhD, received a postdoctoral scholarship from FAPEMIG, Brazil. Paulo Caramelli receives research grants from CNPq (Bolsa de Produtividade em Pesquisa) and FAPEMIG (Bolsista Pesquisador Mineiro), Brazil.
Prevalence and clinical classification of tremor in elderly—A community-based survey in Brazil
Version of Record online: 28 FEB 2013
Copyright © 2013 Movement Disorder Society
Volume 28, Issue 5, pages 640–646, May 2013
How to Cite
Barbosa, M. T., Caramelli, P., Cunningham, M. C. Q., Maia, D. P., Lima-Costa, M. F. F. and Cardoso, F. (2013), Prevalence and clinical classification of tremor in elderly—A community-based survey in Brazil. Mov. Disord., 28: 640–646. doi: 10.1002/mds.25355
Relevant conflicts of interest/financial disclosures: F.C. has received honoraria from Moksha8 and Roche and a research grant from FAPEMIG.
Full financial disclosures and author roles may be found in the online version of this article.
- Issue online: 15 MAY 2013
- Version of Record online: 28 FEB 2013
- Manuscript Accepted: 9 DEC 2012
- Manuscript Revised: 25 NOV 2012
- Manuscript Received: 2 NOV 2011
- essential tremor;
- parkinsonian tremor
Prevalence data on different types of tremor among the elderly population are very scarce. The objective of this study was to study the prevalence of tremor in a community-dwelling elderly population in the town of Bambuí, Brazil. The authors studied 1186 inhabitants aged≥64 years. This was a 2-phase study in which all participants who screened positive in a questionnaire for tremor and parkinsonism or who used drugs capable of causing/suppressing tremor were examined. In this population, the prevalence rate was 17.4% for tremor, 7.4% for essential tremor, 5.6% for parkinsonian tremor, 2.8% for enhanced physiological tremor, and 1.6% for other causes. There were no gender differences in prevalence rates for all types. Patients who had Parkinson's disease with tremor were older than those who had essential tremor, whereas patients who had enhanced physiological tremor were significantly younger. The age-specific prevalence of tremor increased with advancing age for both men and women. The prevalence of tremor in the studied population was high and increased with advancing age. Essential tremor, parkinsonian tremor, and enhanced physiological tremor were the most commonly identified causes. © 2013 Movement Disorder Society