Fast Five Quiz: Can You Identify Psoriatic Arthritis and Initiate the Best Treatment Practices?

Herbert S Diamond, MD; Anwar Al Hammadi, MD; Eric M. Ruderman, MD


December 23, 2021

PsA is accompanied by both peripheral and axial manifestations of musculoskeletal disease. Peripheral joint diseases include polyarticular, oligoarticular, distal, and arthritis mutilans subtypes. Asymmetrical oligoarticular arthritis with or without spine involvement is one of the most common subtypes of PsA, particularly in the early disease state; many patients progress to more symmetrical polyarticular disease.

Arthritis mutilans is a rare form of PsA. Spondylitis without peripheral joint involvement occurs in less than 5% of patients with PsA and is thought to have a male predominance, though recent data call this theory into question. Although its incidence is probably underestimated, SAPHO syndrome (synovitis, acne, pustulosis, hyperostosis, osteitis) is a rare condition.

Learn more about the various forms of PsA.


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