How is juvenile idiopathic arthritis (JIA) defined?

Updated: Jul 25, 2019
  • Author: David D Sherry, MD; Chief Editor: Lawrence K Jung, MD  more...
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Arthritis is defined as either intra-articular swelling on examination or as limitation of joint motion in association with pain, warmth, or erythema of the joint. The hips, temporomandibular joint, and small joints in the spine do not demonstrate swelling when affected by synovitis but demonstrate the combination of loss of motion and pain. The physical findings in JIA are a reflection of the extent of joint involvement. [19]

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