Can juvenile rheumatoid arthritis turn into rheumatoid arthritis?

Depends: Among the well known four clinical types of jra, rf (rheumatoid factor) -positive polyarticular form often persists into adulthood. Affected patients are predominantly females with onset in adolescence.

Not technically: Jra, now called jia (juvenile idiopathic arthritis), has several forms which are different from adult rheumatoid arthritis (ra). One form of jia has the same characteristics as adult RA with many joints involved and a positive rheumatoid factor on blood testing. This may persist into adulthood. Some doctors believe this is simply the adult RA starting in childhood.