Body surface area affected by psoriasis and the risk for psoriatic arthritis: a prospective population-based cohort study.
Philip S HelliwellDaniel B ShinThorvardur Jon LoveJoel M GelfandPublished in: Rheumatology (Oxford, England) (2021)
In this large prospective cohort study, BSA assessed by general practitioners was a strong predictor of developing PsA, and obesity and depression were additive risk factors.