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CASPAR Criteria Scoring — SCE Rheumatology MCQ

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HardSpondyloarthropathyCASPAR Criteria ScoringSCE Rheumatology

A patient has inflammatory arthritis and psoriasis. How is the CASPAR classification threshold applied?

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Correct answer: A — Inflammatory articular disease plus at least three CASPAR points

CASPAR requires inflammatory joint, spinal or entheseal disease as the entry condition, then at least three points from psoriasis, nail dystrophy, RF negativity, dactylitis and juxta-articular new bone formation. Classification criteria support but do not replace diagnosis.

Reference: CASPAR study: classification criteria for psoriatic arthritis (Published August 2006): https://pubmed.ncbi.nlm.nih.gov/16871531/; 2022 BSR guideline for psoriatic arthritis with biologic and targeted synthetic DMARDs (Published May 2022; corrected January 2023): https://academic.oup.com/rheumatology/article/61/9/e255/6594139