Difficult-to-manage and treatment-refractory psoriatic arthritis in patients treated with biological and targeted synthetic DMARDs: prevalence and characteristics in 5 Nordic registries.
OBJECTIVES The European Alliance of Associations for Rheumatology (EULAR) recently proposed a framework for 'difficult-to-manage' (D2M) and 'treatment-refractory' disease in psoriatic arthritis (PsA). We explored real-world prevalence and characteristics of patients fulfilling registry-based components inspired by EULA...