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Making a diagnosis of psoriatic arthritis 

Making a diagnosis of psoriatic arthritis
Making a diagnosis of psoriatic arthritis

Dafna D. Gladman

, Cheryl F. Rosen

, and Vinod Chandran

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date: 30 May 2020

The key to making the diagnosis is identifying characteristic inflammatory musculoskeletal disease (peripheral arthritis, axial arthritis, dactylitis or enthesitis) in the setting of psoriasis

Clinical evaluation with focused imaging is most helpful

Helpful distinguishing features include DIP arthritis, arthritis in a ray distribution, dactylitis, nail psoriasis, presence of axial and peripheral arthritis, juxta-articular fluffy periostitis and a negative test for rheumatoid factor

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