Fast Five Quiz: Polyarticular Psoriatic Arthritis

Herbert S. Diamond, MD

Disclosures

February 04, 2020

Ankylosing spondylitis can produce back pain comparable with that associated with polyarticular psoriatic arthritis but does not produce the peripheral arthropathy or skin lesions that are features of polyarticular psoriatic arthritis.

Enthesopathy, or inflammation at tendon or ligament insertions into bone, may be seen in patients with polyarticular psoriatic arthritis. It is observed most commonly at the attachment of the Achilles tendon and the plantar fascia to the calcaneus, with the development of insertional spurs.

Patients with polyarticular psoriatic arthritis may develop dactylitis. In fact, patients with dactylitis are more likely to have polyarticular disease as well as radiologic evidence of bony damage.

When localized to the foot or toe, the symptoms of polyarticular psoriatic arthritis may be mistaken for gout. A careful differential diagnosis is essential when patients have symptoms of inflammatory disease.

Learn more about diagnostic considerations for polyarticular psoriatic arthritis.

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