title: Prevalence and clinical classification of tremor in elderly--a community-based survey in Brazil.
abstract: 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.
authors: Department of Internal Medicine, Faculty of Medicine, Universidade Federal de Minas Gerais, Belo Horizonte, Minas Gerais, Brazil.
authors: Maira Tonidandel
authors: MT
authors: Barbosa
authors: Paulo
authors: P
authors: Caramelli
authors: Mauro César Quintão
authors: MC
authors: Cunningham
authors: Débora Palma
authors: DP
authors: Maia
authors: Maria Fernanda Furtado
authors: MF
authors: Lima-Costa
authors: Francisco
authors: F
authors: Cardoso
mesh_terms: D000367:Age Factors; D000368:Aged; D000369:Aged, 80 and over; D001938:Brazil / Q000453:epidemiology; D015331:Cohort Studies; D016001:Confidence Intervals; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged; D015995:Prevalence; D012111:Residence Characteristics; D012737:Sex Factors; D011795:Surveys and Questionnaires; D014202:Tremor / Q000145:classification* / Q000175:diagnosis / Q000453:epidemiology* / Q000503:physiopathology