au-amc MCQ (SBA): Chronic plaque psoriasis systemic therapy indication

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MediumDermatology,RheumatologyChronic plaque psoriasis systemic therapy indicationau-amcau-racp

A 48-year-old man with chronic plaque psoriasis affecting 15% of body surface and associated psoriatic arthritis has failed topical therapies and phototherapy. What is the most appropriate next step?

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