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03-01-2016 | Psoriatic arthritis | Book Chapter | Article

Diagnosis and evaluation of psoriasis and psoriatic arthritis

Authors:
Eric Ruderman, Kenneth B. Gordon

Abstract

The most critical element in the diagnosis of psoriasis and psoriatic arthritis (PsA) is understanding that it is a clinical diagnosis. In a patient with joint pain and/or swelling the differentiation of PsA from other types of inflammatory arthritis may be a central element in treatment decisions. Unfortunately, there are often no specific laboratory or radiographic findings that reliably confirm this challenging diagnosis.

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