Psoriatic arthritis is an inflammatory arthritis associated with psoriasis. It is characterised by swelling and inflammation in and around the joints as well as inflammation of the skin. While there is currently no cure for psoriatic arthritis, several new treatments are emerging that offer new hope to patients. In this guide for patients, the authors draw on their experience from one of the largest clinics in the world that is dedicated to understanding andmanaging patients with psoriatic arthritis, and highlight what is know about the causes and clinical features, along with the emotional impact that this condition has on peoples lives and how to manage it.