Clinical Features of Essential Tremor in the Two Ethnic Groups

Objective: The aim of the study was to study the clinical features of essential tremor (ET) in residents of the Republic of Sakha (Yakutia) in various ethnic groups.Material and methods. The study involved 53 patients with an established diagnosis of essential tremor. All patients underwent a detailed neurological examination with a quantitative assessment of the severity and severity of tremor, as well as the degree of maladjustment and activity in everyday life using unified scales.Results and Discussions. It was revealed that the clinical variant of essential tremor-plus, associated with a more severe course and disability of patients. In the representatives of the Russian ethnic group, with the classic version of essential tremor, a combination of head tremor and hand tremor is observed, as well as a more rapid progression of disease symptoms. Representatives of the Yakut ethnic group in the clinical picture of essential tremor-plus are statistically significantly more likely to have a dystonic head position.Conclusion. Clinical variability of essential tremor with differences in the ethnic aspect in the rate of progression and in the frequency of the combination of action tremor with dystonic head position was demonstrated.