The symptoms of arthritis are warmth, swelling and pain in the affected joints. The affected joints are commonly the knees and ankles but also include the small joints of the hands and feet, and the wrists.
Uveitis is inflammation within the eye. It occurs in about 20 per cent of children with psoriatic arthritis. Children with uveitis often have no symptoms at all but may still have damage to their vision. It is very important for children with psoriatic arthritis to have regular eye checks to screen for uveitis.
Recognised patterns of psoriatic arthritis in adults include spondylitis (arthritis of the spine) and enthesitis (inflammation of the tendons), but children with these patterns of disease are classified as having different types of JIA.