Sort by Topic: Select a topic AestheticsAlopeciaGeneral DermatologyHidradenitis SuppuritivaInjectablesMedical DermatologyMedical EducationPractice LifePractice MarketingProfessional DevelopmentPsoriasisPsoriatic ArthritisSkin CancerSun ProtectionViral Diseases All Q&A Psoriatic Arthritis Rachel Printy, PA-C | Psoriatic ArthritisQWhat are the differences between the ACR20 score and MDA score in regard to psoriatic arthritis?