Pictures of Psoriatic Arthritis - Verywell Health
Psoriatic arthritis (PsA) is a type of arthritis that often affects people with psoriasis, an autoimmune skin condition that is characterized by red patches of skin topped with silvery scales. Most people who have PsA will develop psoriasis first, but it is possible to have joint problems before skin symptoms appear. Psoriasis affects up to 3% of people worldwide with up to 40% of this group also having PsA. Both psoriasis and PsA are autoimmune diseases, conditions where the body's immune system attacks its healthy tissues. The main symptoms of PsA are joint pain, stiffness, and swelling. These, and other symptoms like chronic fatigue, are often ones that cannot be seen by others. This is why people consider PsA an invisible disease. Symptoms of PsA can affect any part of the body and will range from mild to severe. PsA often alternates between flare-up periods (periods of high disease activity) and periods of remission (while the disease is mild or inactiv...