Main clinic and epidemiological factors of myasthenia in Leningrad region

Abstract

Objective: to conduct a study of the basic epidemiological and clinical data of myasthenia in Leningrad region. The analysis of inpatient and outpatient charts of all patients with myasthenia, who were treated at the neurology department of the Leningrad Regional Clinical Hospital (LOKB) from 2003 to 2012. The estimation of incidence and prevalence of the disease per 100 000 population, the basic gender-age characteristics and clinical features of myasthenia in Leningrad region. According to the findings myasthenia gravis is not a rare disease, the prevalence of myasthenia gravis in the whole area is 4.6 cases, the average incidence was 0.29 cases per 100 000 population. The prevalence of myasthenia gravis in Leningrad region is lower than in other regions of Russia. Among patients women predominate in the age group 45-59 years, and there is a significant number of patients with disease onset in middle and old age.