Psoriatic arthropathy

Psoriatic arthritis is a type of inflammatory arthritis that affects around 5% of people suffering from psoriasis. It is said to be a seronegative spondyloarthropathy and therefore occurs more commonly in patients with tissue type HLA-B27. Psoriatic arthritis causes joint inflammation; may cause tendinitis and a sausage-like swelling of the digits known as dactilytis. X-ray appearance is that of "fluffy, new" bone. Treatment of psoriatic arthritis is similar to that of rheumatoid arthritis. A large proportion of patients (approx 80%) with psoriatic arthritis have psoriatic nail lesions characterized by pitting of the nails, or even loss of the nail itself.


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