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Psoriasis progression to psoriatic arthritis seen in European dermatology clinics

The risk of developing psoriatic arthritis (PsA) in psoriasis patients and the assessment of quality of life (QoL) differences between psoriasis and PsA patients was examined in a large (N = 1560) cross-sectional observational study in the UK, France, Spain, Italy and Germany in 2006. The sample included 126 patients with PsA. Survival analysis revealed that the incidence of PsA remained constant (74/1000 patient-years) and the prevalence increased with time since diagnosis of psoriasis, reaching 20.5% after 30 years. Those patients with a highly affected body surface area (BSA) currently with psoriasis were more likely to develop PsA (P < 0.028) with an odds ratio of 1.06 for every 1% increase ...