Juvenile Arthritis | JA Alliance | Symptoms Treatments ...Juvenile Arthritis The basics about this disease that affects 300,000 children in the U.S.Juvenile Arthritis Facts - Arthritis Foundation | Symptoms ...Juvenile Arthritis Fact Sheet. Juvenile arthritis (JA) refers to any form of arthritis or an arthritis-related condition that develops in children or teenagers who ...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 ...