Psoriatic arthritis [pronounced sorr-eye-at-ick arth-rye-tis], also called PsA, is a chronic, or ongoing, immune-mediated (caused by the immune system*) inflammatory disease that affects the joints.1
In people with PsA, the immune system targeting its own joints causes pain, swelling, fatigue and stiffness in the joints, which may restrict your movement and make it difficult to do simple things.1 PsA can affect many joints in the body or only a few – it’s different for everyone.2 People with PsA may also have skin psoriasis.3
How psoriatic arthritis affects the body4
*Neither PsA nor psoriasis (PsO) is contagious,2,7 but it can mean that you stand a greater risk of developing some other disease, such as diabetes, cardiovascular disease, inflammatory intestinal disease, auto-immune eye disease, fibromyalgia or depression.8
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Does psoriatic arthritis (PsA) always stay the same?