Pediatrics Musculoskeletal disorders dd43d72c Diagnostic Criteria of JRA A Disease persisting 6 weeks or longer B Onset before age 16 years C Ahritis involving >5 joints D Polyaicular JRA ANA is +ve High-Yield Explanation It is defined as ahritis of one or more joints with onset below 16 yr age and persisting for atleast 6 weeks Ref Ghai pediatrics eighth edition pg no 625