Causes of psoriatic arthritis

Between one and two in every five people with psoriasis develop psoriatic arthritis.

It usually develops within 10 years of psoriasis being diagnosed, although some people may experience problems with their joints before they notice any symptoms affecting their skin.

Like psoriasis,psoriatic arthritis is thought to occur as a result of the immune system mistakenly attacking healthy tissue.

However, it's not clear why some people with psoriasis develop psoriatic arthritis and others don't.

Content supplied by the NHS Website

Medically Reviewed by a doctor on 21 Dec 2018