Psoriatic ArthritisDiagnosis |
Physician developed and monitored. Original Date of Publication: 15 Jun 2006
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Original Source: http://www.rheumatologychannel.com/psoriatic/diagnosis.shtml | |
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Home » Psoriatic Arthritis » Diagnosis | 
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Diagnosis
A diagnosis of psoriatic arthritis is made on the basis of the patient's medical history (i.e., a history of psoriasis), physical examination, and diagnostic tests. In patients who have psoriasis, involvement of the fingernails (e.g., development of ridges and pits) may be suggestive of future psoriatic arthritis development.
Laboratory tests that may be performed include erythrocyte sedimentation rate (ESR) and C-reactive protein level. Elevated levels in these tests indicate inflammation in the body. Fluid within the joints (called synovial fluid) also may be tested to detect inflammation.
Imaging tests (e.g., x-rays, CT scan, MRI scan) of the hands, feet, spine, and sacroiliac joint may be performed. These tests are used primarily to detect bone erosion and new bone formation, which may be present in some types of severe psoriatic arthritis.
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