Fast Five Quiz: Polyarticular Psoriatic Arthritis

Herbert S. Diamond, MD

Disclosures

February 04, 2020

Figure 1. Polyarticular Psoriatic arthritis.

Five patterns of joint involvement have been recognized in psoriatic arthritis: asymmetrical oligoarticular arthritis, symmetrical polyarthritis, distal interphalangeal arthropathy, arthritis mutilans, and spondylitis with or without sacroiliitis. Over time, the pattern of joint involvement in an individual patient may change or evolve.

The majority of patients (60%) have polyarticular disease, which may involve the small joints of the hands and feet as well as larger, weight-bearing joints including the ankles. Arthritis mutilans is recognized as the most severe disease subtype and can lead to permanent disfigurement.

Learn more about the subtypes of psoriatic arthritis.

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