Prevalência do tremor essencial em população exposta ocupacionalmente a agrotóxicos no Estado do Rio de Janeiro / Prevalence of essential tremor in occupationally exposed population to pesticides in the State of Rio de Janeiro

Introdução: O tremor essencial é um dos distúrbios de movimento mais frequentes em adultos. Objetivo: Estimar a prevalência de tremor essencial em um grupo de guardas de endemia expostos cronicamente a agrotóxicos, identificar seus municípios de lotação e os principais inseticidas e larvicidas aplicados. Método: Estudo transversal descritivo e inferencial com dados obtidos de prontuários médicos dos guardas de endemias oriundos da Fundação Nacional de Saúde (Funasa), que buscaram atendimento no Ambulatório de Neurotoxicologia Ocupacional e Ambiental do Cesteh/Ensp/Fiocruz no período entre agosto/2010 a setembro/2012. Resultados: Foram analisados 383 registros. A estimativa da prevalência de tremor essencial foi de 14,4% (IC95%: 10,9 - 17,9). Foram identificados 19 municípios de lotação e 12 princípios ativos aplicados. Conclusão: Observou-se elevada prevalência de tremor essencial nesta amostra. Limitações no desenho devem ser consideradas, sendo necessário avaliar seus resultados com cautela. (AU)

Introdution: Essential tremor is one of the most frequent movement disorders in adults. Objective: To estimate the prevalence of essential tremor in a group of public pesticide applicators, identify their counties and the main insecticides and larvicides applied. Method: This is a descriptive and inferential, transversal analysis performed from the secondary data obtained from medical records of public pesticide applicators originated from Fundação Nacional de Saúde (Funasa), seeking care at Outpatient Clinic of Occupational and Environmental Neurotoxicology from Cesteh/Ensp/Fiocruz between august/ 2010 and september/2012. Results: In our sample, the estimate of the prevalence of essential tremor was 14.4 % (95%CI: 10,9 to 17,9), 19 counties and 12 pesticides applied were identified. Conclusion: It was observed a high prevalence of essential tremor, but this result must be treated with caution. (AU)

Prevalence of major neurological disorders among geriatric population in the metropolitan city of Kolkata.

Well-conducted neuroepidemiological studies for the geriatric population are rare in India. In view of the growing aging population, we planned to determine the prevalence of common neurological disorders among the elderly population in the city of Kolkata. This was a cross-sectional study of a stratified random sample of the city population and carried in two stages through house to house survey. Initially, trained non-medical workers screened the cases with a validated family questionnaire and then a neurologist examined all the screened positive cases. A validated neuropsychological screening test was also applied among the elderly population with cognitive complaints. Results showed prevalence rates (per 1000 elderly population--> or = 60 years) of following disorders in decreasing order: stroke--33.93, essential tremor--13.76, dementia--7.89, Parkinsonism--3.30 and epilepsy--2.57. Sex-specific prevalence showed that stroke was commoner among men and that of other disorders among women. Age-specific prevalence recorded progressive increase in the rates of all disorders among both genders, though not uniformly among women. Overall the crude prevalence of neurological disorders was 60.9 per 1000. The present study shows higher rate of stroke as compared to other neurological disorders among elderly population in India, which needs urgent attention.

A clinical study of non-parkinsonian and non-cerebellar tremor at a specialty movement disorders clinic.

BACKGROUND: No Indian studies have focused on the clinical aspects of tremor. AIMS: To study the distribution of various etiological types of tremor disorders at a Movement Disorders clinic of a large, tertiary care hospital in India and to study the clinical characteristics of essential tremor [ET]. SETTING AND DESIGN: Prospective cross-sectional study at a tertiary care specialty clinic. MATERIAL AND METHODS: Patients presenting with tremor as the chief complaint, with no features suggestive of parkinsonism, cerebellar disorder or acute central nervous system disorder, were included. Patients were classified into different etiological categories from detailed history. All patients diagnosed as ET, were further interrogated for a detailed family history and examined for characteristics of tremor. These patients were then classified into 'definite', 'probable' and 'possible' ET. RESULTS: One hundred and six patients (mean age 44.4 + 15.1 years) were examined during the study period. ET (59.4%) and dystonic tremor (21.7%) were the commonest types. Only 43% patients of ET reported progression; response to alcohol was seen in only a single patient, a positive family history was present in 52.4% and in 36.4% the inheritance was of an autosomal dominant pattern. CONCLUSION: ET and dystonic tremor are the commonest causes of tremor presenting to a specialty Movement Disorders clinic. Most patients with ET have high-frequency tremor, with mild asymmetry in 40% cases. Alcohol responsiveness may not be a useful tool in the diagnosis of ET.