Assessing flares in patients with psoriatic arthritis using questionnaires.
The psoriatic arthritis (PsA) FLARE Questionnaire was developed to study flares in PsA. We aimed to validate the FLARE Questionnaire and compare it with the Psoriatic Arthritis Impact of Disease 12-item Questionnaire (PsAID-12) to determine whether PsAID-12 was sufficient for as…