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 HealthJuvenile rheumatoid arthritis (JRA) is a term used to describe a common type of arthritis in children. It is a long-term (chronic) disease resulting in ...