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

Diagnosis and evaluation of psoriasis and psoriatic arthritis

Eric Ruderman, Kenneth B. Gordon


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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