Joint involvement may be either symmetric or asymmetric in polyarticular psoriatic arthritis, and it is predominantly symmetric in rheumatoid arthritis. Bone erosions, devoid of new bone growth, as well as cervical spine involvement, are distinctive of rheumatoid arthritis and not polyarticular psoriatic arthritis. Conversely, axial spine involvement and nail dystrophy may be seen in polyarticular psoriatic arthritis but are not seen in rheumatoid arthritis.
Learn more about the manifestations of psoriatic arthritis.
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Cite this: Herbert S. Diamond. Fast Five Quiz: Polyarticular Psoriatic Arthritis - Medscape - Feb 01, 2022.