نبذة مختصرة : Juvenile idiopathic arthritis (JIA) is an autoimmune disease usually occurring in children before the age of 16. As one of the most prevalent rheumatic diseases in the pediatric population, with an estimated prevalence of 2 to 20 and an incidence of 16 to 150 per 100,000 children, it is defi ned as an infl ammation of one or more joints, with a duration of 6 weeks minimum. JIA is primarily diagnosed clinically, confi rmed by laboratory and radiological fi ndings, with the goal of early detection and assessment of the spread and progress of the disease as well as the response to medication. Th e current International League of Associations for Rheumatology (ILAR) classifi cation defi nes eight types of arthritis. ; Juvenilni idiopatski artritis (JIA) autoimunosna je bolest koja se javlja u dječjoj dobi prije navršene 16. godine života i najčešća je reumatska bolest u pedijatrijskoj populaciji s procijenjenom prevalencijom od 2 do 20, a incidencijom od 16 do 150 na 100.000 djece. Defi nira se kao upala jednog ili više zglobova koja traje najmanje 6 tjedana u kontinuitetu. JIA je ponajprije klinička dijagnoza koja se nadopunjuje nalazima laboratorijske i radiološke obrade radi što ranijeg postavljanja dijagnoze, procjene proširenosti bolesti, praćenja tijeka bolesti i odgovora na primijenjenu terapiju. Vrijedeća ILAR-ova (iz engl. International League of Associations for Rheumatology) klasifi kacija defi nira osam različitih tipova bolesti.
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