Juvenile idiopathic arthritis is a disease that happens to children. It causes swollen and stiff joints. Experts think it happens when a child’s natural defenses (immune system) attack his or her joints.
Your child may have some pain and walk with a limp. And your child may have red or swollen eyes.
Sometimes this disease is called juvenile rheumatoid arthritis.
Your child can take pills or get a shot in a joint to reduce pain and swelling. Physical therapy can help keep your child’s joints flexible.