What is psoriatic arthritis?
Psoriatic arthritis is an inflammatory disease which occurs when the body’s immune system begins to attack healthy cells and tissue.3
The disease will most often develop in people who already experience psoriasis, although the arthritis can occur first. In certain cases, both diseases can be diagnosed at the same time and it has been known for both to first appear concurrently.4
It is not yet known what causes psoriatic arthritis, but it is thought that some people’s genes make them more likely to develop it than others. Research suggests that a trigger might cause the disease to start, especially in people who are already at risk.5
No trigger has yet been found, but it is suspected that an infection or a variety of infections (for example bacteria that live in patches of psoriasis) might be involved.6
Over time, there will be periods when the symptoms a person experiences become worse, known as a ‘flare’, and improve, known as ‘remission’.3 Psoriatic arthritis cannot be transmitted by having contact with someone who has the condition.7,8
Psoriatic arthritis is considered a ‘chronic’ disease, which means it can persist for a long time or constantly reoccurs.7,9