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Epidemiology of psoriatic arthritis

The epidemiological studies of psoriatic arthritis (PsA) is quite challenging as our understanding of the disease is evolving. A wide range of incidence and prevalence is reported among different countries suggesting genetic and environmental factors influencing the epidemiology of PsA. Other contributing factors accounting for the wide range and variation of PsA epidemiology include age and gender variations, ethnicity, lack of precise case definition, and small sample size. A high level of suspicion in patients with pre-existing psoriasis, and collaborative efforts shared between primary care physicians (PCP), dermatologist, and rheumatologist, will enhance early detection and management of PsA, subsequently improving overall patient outcomes, and quality of life.