Abstract:
Rheumatoid arthritis (RA) is an autoimmune disease that causes inflammation and swelling in the joints, sometimes involving extra-articular organs. In-depth analysis of the clinical course of disease forms is important in the formation of diagnostic markers and individual approaches. Extra-articular forms of RA indicate an intensification of the inflammatory process and the severity of the disease,therefore their study is important in the management and prognosis of the disease.