Report of the Skin Research Working Groups From the GRAPPA 2020 Annual Meeting.

At the 2020 annual meeting of the Group for Research and Assessment of Psoriasis and Psoriatic Arthritis (GRAPPA), the International Dermatology Outcome Measures (IDEOM) Initiative Psoriasis (PsO) Working Group presented an update on its work to agree on meaningful, valid, and feasible outcome measures for PsO randomized controlled trials and longitudinal observational studies. The Treatment Satisfaction Working Group presented the development of a treatment satisfaction instrument to be utilized in PsO clinical trials. The Musculoskeletal Symptoms Working Group presented an overview of their work conducted to date to define how to best measure musculoskeletal symptoms in PsO clinical studies, and discussed next steps during an open-panel discussion, which included PsO and psoriatic arthritis experts.