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Polyarticular juvenile idiopathic arthritis

Last edited: 4/15/2026

Overview

Polyarticular juvenile idiopathic arthritis (JIA) is a chronic inflammatory condition characterized by arthritis affecting five or more joints in children under 16 years of age, often accompanied by systemic features like fever and rash 1.

Diagnosis

  • Presence of arthritis in five or more joints 1.
  • Exclusion of other rheumatologic conditions through clinical evaluation and laboratory tests 1.
  • Elevated inflammatory markers such as ESR and CRP may be observed 1.
  • Imaging studies like X-rays may show early joint damage in chronic cases 1.
  • Management

  • First-line treatments: Nonsteroidal anti-inflammatory drugs (NSAIDs) for pain and inflammation 1.
  • Disease-modifying antirheumatic drugs (DMARDs): Methotrexate is commonly used as first-line biologic DMARD 1.
  • Biologics: TNF inhibitors (e.g., etanercept, adalimumab) or other biologic agents like IL-6 inhibitors (e.g., tocilizumab) for refractory cases 1.
  • Physical therapy: Essential for maintaining joint function and mobility 1.
  • Regular monitoring: Frequent assessments of disease activity, joint status, and medication adherence 1.
  • Special Populations

  • Pediatrics: Transition readiness assessment crucial; use Transition Readiness Assessment Questionnaire (TRAQ) 5.0 to evaluate preparedness for adult care 1.
  • Adolescents/Young Adults: Highlight importance of adherence post-transition; lower adherence noted post-transfer to adult care (MMAS-4 scores) 1.
  • Comorbidities: Specific management strategies may be needed for comorbidities; transition support critical to ensure continuity of care 1.
  • Key Recommendations

  • Assess transition readiness in pediatric patients approaching adulthood using validated tools like TRAQ 5.0 to ensure smooth healthcare transition (Evidence: Moderate) 1.
  • Monitor and enhance medication adherence post-transition to adult care, considering potential declines in adherence (Evidence: Moderate) 1.
  • Implement comprehensive transitional care programs that include psychological support and educational components to improve long-term outcomes (Evidence: Expert opinion) 1.
  • References

    1 Batu ED, Balik Z, Sener S, Aliyev E, Bayindir Y, Cam V et al.. Transitioning from pediatric to adult-oriented healthcare in rheumatology: the pediatric side of the coin. Rheumatology (Oxford, England) 2025. link

    Original source

    1. [1]
      Transitioning from pediatric to adult-oriented healthcare in rheumatology: the pediatric side of the coin.Batu ED, Balik Z, Sener S, Aliyev E, Bayindir Y, Cam V et al. Rheumatology (Oxford, England) (2025)

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