What is PsA?

Psoriatic arthritis, or PsA, is a form of arthritis that is part of a family of conditions associated with psoriasis called psoriatic disease. PsA causes joint pain, stiffness and swelling and if left untreated can cause severe joint damage.


PsA involves the peripheral joints such as ankles, knees, or elbows (arthritis), axial skeleton, which includes the spine (spondylitis), insertion of tendons and ligaments into bone (enthesitis), inflammation of whole fingers and toes (dactylitis), skin, and nails.


Nearly all individuals with PsA have psoriasis and for the majority of them, skin disease appears before joint disease. In 10-15% of cases, PsA may appear before psoriasis. Diagnosing PsA can be challenging, since many of the symptoms are the same as for other conditions like gout and rheumatoid arthritis.

of people with PSA develop psoriasis first.

It’s easy to chalk up joint pain to different causes

Dr. Jodie Reis explains, if pain or swelling persist or get worse, these may be red flags that PsA is involved.