Systemic JRA makes up 20% of all cases
Systemic JRA, sometimes referred to as Still’s disease, affects much of the body, moving beyond the joints. Aside from joint swelling, other symptoms that this type of JRA presents include fever and a light pink rash. Systemic JRA can also affect the lymph nodes, liver, heart, and spleen. In several instances, fever and other symptoms may go away within time; however, since eye problems are not common with systemic JRA, their onset needs to be checked out and monitored regularly.
Around 20% of children with JRA suffer from this type and although a majority of them test negative for abnormal antibodies within the blood and rheumatoid factor, a small percentage may develop severe arthritis that continues well into adulthood.