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Related Experiment Video

Updated: Feb 15, 2026

Author Spotlight: Evaluating Traditional Chinese Therapy for Ankylosing Spondylitis in Mice
04:47

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Juvenile ankylosing spondylitis with uveitis.

Chiang-Hua Liao1, Jing-Long Huang

  • 1Division of Allergy, Asthma, and Rheumatology, Department of Pediatrics, Chang Gung Children's Hospital, Chang Gung University, Taoyuan, Taiwan.

Asian Pacific Journal of Allergy and Immunology
|August 23, 2003
PubMed
Summary

Juvenile ankylosing spondylitis (JAS) can present atypically in adolescent boys with lower limb arthritis and enthesitis. Early consideration of JAS is crucial, especially with a positive HLA-B27, to ensure timely diagnosis and management.

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Area of Science:

  • Rheumatology
  • Pediatric Rheumatology
  • Immunogenetics

Background:

  • Reactive arthritis and juvenile idiopathic arthritis are common considerations in pediatric arthritis.
  • Early presentation of juvenile ankylosing spondylitis (JAS) can be varied, often mimicking other inflammatory arthropathies.
  • The role of human leukocyte antigen B27 (HLA-B27) in pediatric spondyloarthritis is significant.

Observation:

  • A 17-year-old male presented with initial symptoms of right ankle arthralgia, conjunctivitis, and a history of diarrhea, initially suspected as reactive arthritis.
  • Diagnostic workup revealed elevated erythrocyte sedimentation rate (ESR) and positive HLA-B27, with negative rheumatoid factor (RF) and antinuclear antibody (ANA).
  • Over two years, the patient developed lower back pain, knee arthralgia, and uveitis, leading to a revised diagnosis of JAS.

Findings:

  • The case highlights that JAS may not always present with classic axial symptoms or enthesitis in its early stages.
  • Uveitis, while uncommon in pediatric JAS, was a key feature in this patient's later presentation.
  • Negative RF and ANA results, coupled with positive HLA-B27, are important indicators for spondyloarthritis in adolescents.

Implications:

  • This case underscores the importance of considering JAS in young adolescent males with lower limb arthritis, enthesitis, and a positive HLA-B27, even with atypical initial symptoms.
  • Timely diagnosis of JAS is critical for initiating appropriate treatment to prevent long-term joint damage and functional impairment.
  • Further research into the diverse clinical presentations of pediatric spondyloarthritis is warranted to improve early detection rates.