Classification and outcome measures for psoriatic arthritis

Ying Ying Leung, Alexis Ogdie, Ana Maria Orbai, William Tillett, Laura C. Coates, Vibeke Strand, Philip Mease, Dafna D. Gladman

Research output: Contribution to journalReview articlepeer-review

6 Scopus citations


Psoriatic arthritis (PsA) is an inflammatory arthritis with multiple manifestations: peripheral/axial arthritis, enthesitis, dactylitis, psoriasis, and nail involvement. From having an agreed upon classification criteria in 2006, the assessment of PsA has advanced from uncertainties to development and validation of numerous specific outcome measures. The Group for Research and Assessment of Psoriasis and Psoriatic arthritis (GRAPPA) has spearheaded the development of a core domain set and is now working on a core outcome measurement set to standardize outcome measures for PsA, that will provide guidance for use of instruments in randomized controlled trials (RCTs) and longitudinal observational studies (LOS). This article summarizes and updates these work processes to improve assessment of this multisystem complex rheumatologic disease.

Original languageEnglish (US)
Article number246
JournalFrontiers in Medicine
Issue numberSEP
StatePublished - 2018


  • Classification criteria
  • Core domains
  • Core instruments
  • Outcome measures
  • Psoriatic arthritis

ASJC Scopus subject areas

  • General Medicine


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