Evaluation and Validation of a Patient-completed Psoriatic Arthritis Flare Questionnaire.
Philip S HelliwellWilliam TillettRobin WaxmanLaura C CoatesMel BrookeOliver M FitzGeraldJonathan C PackhamNeil J McHughnull nullPublished in: The Journal of rheumatology (2021)
A PsA flare displays escalation of symptoms and signs across multiple domains. The FLARE questionnaire has external validity in terms of both composite disease activity and overall patient opinion about the state of their condition.