[JUVENILE SPONDYLOARTHRITIS]

Area of Science:

• Pediatric Rheumatology
• Immunology
• Genetics

Background:

• Juvenile spondyloarthritis (jSpA) is a multifactorial disease.
• It involves immune system dysregulation, environmental factors, and genetic predisposition.
• jSpA leads to inflammation and structural damage, often presenting as peripheral arthritis rather than spinal involvement.

Purpose of the Study:

• To summarize the current understanding of juvenile spondyloarthritis (jSpA).
• To outline diagnostic criteria and methods.
• To review treatment strategies and challenges in predicting outcomes.

Main Methods:

• Review of International League Against Rheumatism (ILAR) criteria for classification.
• Clinical examination and medical history for diagnosis.
• Laboratory tests including ANA, RF, HLA-B27, and fecal calprotectin.
• Imaging techniques such as musculoskeletal ultrasound (PDUS), radiography, and MRI.
• Pharmacological treatments including NSAIDs, synthetic DMARDs, and biologic DMARDs.

Main Results:

• Most jSpA patients are classified under the enthesitis-related arthritis group of juvenile idiopathic arthritis.
• Diagnosis often relies on clinical presentation and family history, with HLA-B27 being a significant genetic marker.
• Treatment varies from NSAIDs and physical therapy to synthetic and biologic DMARDs based on disease presentation (peripheral vs. axial).

Conclusions:

• Early diagnosis and appropriate treatment are crucial for managing jSpA.
• Predicting treatment response and prognosis remains challenging.
• Further research into jSpA pathogenesis may improve patient outcomes.