Test Your Knowledge: The Many Faces of Psoriatic Arthritis
Reviewed by: HU Medical Review Board | Last reviewed: August 2026 | Last updated: October 2026
Psoriatic arthritis (PsA) is a heterogeneous, multidomain disease, and managing it well means recognizing its many presentations – from the swollen digit to the inflamed eye – and prescribing with safety in mind. These 5 questions span dactylitis, nail disease, oral therapy, extra-articular manifestations, and pre-treatment screening.
Clinical Challenge
Dactylitis – the uniform "sausage" swelling of an entire digit – is a characteristic feature of PsA. Which statement best reflects its clinical significance?
Clinical Challenge
A 44-year-old with plaque psoriasis reports swelling and stiffness of several distal interphalangeal (DIP) joints. Examination shows nail pitting and onycholysis on the same fingers, and rheumatoid factor is negative. Which relationship best explains the co-localization of nail and DIP joint disease?
Clinical Challenge
Which treatment option for PsA is an oral agent that does not require routine laboratory blood monitoring?
Clinical Challenge
Enthesitis is a defining musculoskeletal feature of PsA. Which clinical presentation is most characteristic of it?
Clinical Challenge
Before starting a TNF inhibitor for a 39-year-old with active PsA, which of the following is an essential pre-treatment step?