Prevalence of Psoriatic Arthritis and Joint Complaints in Italian Psoriasis Patients

Title: Prevalence of psoriatic arthritis and joint complaints in a large population of Italian patients hospitalised for psoriasis.
: Gisondi P, et al.
Publication: Eur J Dermatol. 2005 Jul-Aug;15(4):279-83.

The authors examined the prevalence of psoriatic arthritis and joint complaints in the large population of Italian patients hospitalized for psoriasis. They evaluated a total of 936 patients, according to the European Spondyloarthropathy Study Group criteria. In addition to skin disease severity, specific joint signs and symptoms were evaluated.

The authors found that 71 patients (7.7%) had psoriatic arthritis, with the following symptoms:

Arthralgia (severe pain in the joints) 90%
Stiffness 70.4%
Swelling 67.7%
Ankylosis (consolidation, stiffening and immobility of a joint) 23.9%
Paresthesia (burning, prickling, itching or tickling sensation of the skin with no apparent cause) 25.4%

Another 12.3% of those with plaque psoriasis have joint symptoms without having psoriatic arthritis:

Arthralgia 7%
Stiffness 4.2%
Swelling 3.7%
Ankylosis 1.2%
Paresthesia 12.3%

Among 114 patients with arthralgia, 42 or 39.6% did not meet the criteria for psoriatic arthritis.

The authors concluded that patients with plaque psoriasis often have joint symptoms that made it distinguish patients with psoriatic arthritis from patients with plaque psoriasis and joint complaints.

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