What is Juvenile Rheumatoid Arthritis (JRA)? Juvenile rheumatoid arthritis, JRA in short, is a form of chronic arthritis in one or more joints persisting for at least 6 weeks and certain other conditions, which can give rise to similar symptoms, are excluded. Disease has many subtypes depending upon the type of onset and defined by clinical... continue reading at Dr. OP Garg, Senior Consultant Rheumatologist in New Delhi, India talks about Arthritis and other joint conditions