Which physical findings suggest psoriatic arthritis?

Updated: Mar 17, 2021
  • Author: Jacquiline Habashy, DO, MSc; Chief Editor: William D James, MD  more...
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A retrospective study from 2014 reports that nail involvement in psoriasis is a significant predictor of the patient also having psoriatic arthritis. [31] The study looked at retrospective data from three German cross-sectional independent national studies on patients with psoriasis and psoriatic arthritis. Data on the patient’s history of psoriasis and psoriatic arthritis, clinical findings, nail involvement, and patient- and practitioner-reported outcomes were collected from standardized questionnaires. In the results, the regression model of 4146 patients indicated one of the strongest predictors of concomitant psoriatic arthritis was nail involvement.

Psoriatic arthritis affects approximately 10-30% of those with skin symptoms. The arthritis is usually in the hands and feet and, occasionally, the large joints. It produces stiffness, pain, and progressive joint damage.

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