Age ≥18

Able to provide an informed consent

Meets the CASPAR criteria for PsA

Early PsA - Less than 5 years from a rheumatologist diagnosis of PsA

Dermatologist confirmed diagnosis of psoriasis

No prior diagnosis of PsA or signs of PsA on physical examination

Psoriasis Epidemiology Screening Tool (PEST) score \< 3

Referred to rheumatology for musculoskeletal symptoms such as joint pain, stiffness, back pain

No evidence of inflammatory rheumatic condition including rheumatoid arthritis, spondyloarthritis, systemic lupus erythematosus, scleroderma, gout, septic arthritis or recent joint trauma/surgery

No psoriasis

No inflammatory bowel disease

The Diagnostic Ultrasound Enthesitis Tool (DUET) Study

What this study is about