Juvenile idiopathic arthritis - Wikipedia, the free encyclopediaJuvenile idiopathic arthritis (JIA) (aka Juvenile Rheumatoid Arthritis JRA) is the most common form of persistent arthritis in children. (Juvenile in this context ...Juvenile Idiopathic Arthritis - KidsHealth - the Web's most ...Juvenile idiopathic arthritis (also called juvenile rheumatoid arthritis) affects some 50,000 kids in the United States. Learn more.Juvenile rheumatoid arthritis - PubMed HealthPubMed Health specializes in reviews of clinical effectiveness research, with easy-to-read summaries for consumers as well as full technical reports.