Juvenile Rheumatoid Arthritis (JRA) Symptoms, Signs, Diagnosis and ...... arthritis (juvenile rheumatoid arthritis, JRA ... is arthritis in children? What are the signs, symptoms, and treatment of the different forms of juvenile rheumatoid arthritis?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 - MayoClinic.comAdequate calcium in the diet is important because children with juvenile rheumatoid arthritis are at risk of developing weak bones (osteoporosis) due to the disease, the ...