About 1 out of 1,000 children have
juvenile idiopathic arthritis (JIA). There are several types of juvenile idiopathic arthritis, with most types being more common in girls.1
The types of JIA affect
children at the following rates:1
Juvenile idiopathic arthritis can occur at higher rates among
certain ethnic groups and in some geographic areas. Environmental and genetic
factors are thought to be responsible, though research has not yet confirmed
Nistala K, et al. (2009). Juvenile idiopathic arthritis. In
GS Firestein et al., eds., Kelley's Textbook of Rheumatology, 8th ed., vol. 2, pp. 1657–1675. Philadelphia: Saunders
Warren RW, et al. (2005). Juvenile idiopathic
arthritis (Juvenile rheumatoid arthritis). In WJ Koopman, LW Moreland, eds.,
Arthritis and Allied Conditions, 15th ed., vol. 1, pp.
1277–1300. Philadelphia: Lippincott Williams and Wilkins.
June 5, 2012
Susan C. Kim, MD - Pediatrics
& John Pope, MD - Pediatrics
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