Utilization of the validated Psoriasis Epidemiology Screening Tool (PEST) to identify signs and symptoms of psoriatic arthritis among those with psoriasis: a cross‐sectional analysis from the US‐based Corrona Psoriasis Registry

Background Despite increasing awareness of the disease, rates of undiagnosed psoriatic arthritis (PsA) are high in patients with psoriasis (PsO). The validated Psoriasis Epidemiology Screening Tool (PEST) is a five‐item questionnaire developed to help identify PsA at an early stage.