If you have psoriasis, then it’s likely that you’ve heard of its unofficial sister condition: psoriatic arthritis. Both are chronic autoimmune disorders characterized by inflammation in the body, with the main difference being that psoriasis (PsO) manifests itself on the skin, while psoriatic arthritis (PsA) presents itself via joint pain, swelling, and stiffness of the limbs.
Despite their similarities, psoriasis and psoriatic arthritis are distinct conditions. Adam Friedman, MD, professor and chair of the Department of Dermatology at the George Washington University School of Medicine and Health Sciences, comments on the differences of these two conditions.
