According to the International League of Associations for Rheumatology, JIA is defined as an arthritis of unknown etiology that begins before the 16th birthday and persists for at least 6 weeks with other known conditions excluded. About 1 in 1,000 children have JIA, and the condition can persist into adulthood, resulting in significant long-term morbidity.
Dr. Beukelman and Dr. Lehman had no relevant financial disclosures.