Approximately 80%-90% of patients with PsA exhibit nail symptoms, such as nail pitting and nail bed separation. Other risk factors include low level of education, use of retinoid medications, and uveitis.
Obesity (body mass index, ≥ 33 kg/m2) is associated with increased disease activity and poorer response to treatment. While there are some studies that suggest obesity is a risk factor for the development of PsA, it is not as strong a risk factor as nail disease. Weight loss may reduce disease activity and improve outcomes.
Learn more about PsA.
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Cite this: Eric Ruderman. Fast Five Quiz: The Epidemiology of Psoriatic Arthritis - Medscape - Mar 10, 2022.