Modern clinical and epidemiological characteristic of systemic lupus erythematosus based on the data of the territorial registry

Abstract

Systemic lupus erythematosus (SLE) is a severe rheumatic disease characterized by polysymptomatic clinical picture. At the present stage, there are no updated epidemiological data due to the low prevalence of the disease. The aim of the study was to examine the current clinical and epidemiological characteristics of patients with systemic lupus erythematosus based on the information contained in the territorial register, analysis of occurrence and symptoms at the early stage of the disease. This study demonstrated the epidemiological and clinical characteristics of SLE from the analysis of 107 cases during the period from 2011 to 2013 and retrospective analysis of the cases for 1980-2013. The epidemiological situation was evaluated based on extensive and intensive indicators using statistical software license. The current SLE prevalence was estimated at 5,59 per 100 000 population in 2013, the incidence between 1994 and 2003 at 0,29 per 100 000 population and between 2004 and 2013 at 0,49, with the peak in 2010 up to 1,35 per 100 000 population. The average absolute growth and growth rate of SLE in the first decade was 0,05% and 0,24%, in the second decade 0,001% and 0,006% respectively, with the female to male ratio being 9:1, mean age of the patients 37,62±11,65 years), and ethnic composition of 87 Slavs and 15 Crimean Tatars. The most common symptoms at the early (polyarthritis, fever, dermatitis) and advanced (polyarthritis, Raynaud's syndrome, carditis, myalgia) stages differed from those specified by American College of Rheumatology (1997). The difference between early and late symptoms of SLE was documented . Based on the data obtained, the division of the disease into clinical subtypes (phenotypes) is proposed.