Psoriatic arthritis affects between 0.1% and 1% of the general population globally, and appears to be more prevalent in certain regions. It affects men and women equally and typically appears between the ages of 30 and 55 years. Psoriatic arthritis tends to be more common in people with psoriasis affecting around 20% of individuals, but estimates can depend on the inclusion criteria studies use.

We touch on the pathogenesis of psoriatic arthritis and how it might manifest in a patient, as well as the contribution of synovial inflammation and how research into this topic contributes to our understanding of the disease. We also discuss the reasons psoriatic arthritis research is in the early stages when compared to rheumatoid arthritis. 

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