Juvenile rheumatoid arthritis affects approximately 30,000 to 60,000 children in the United States. The condition is a type of arthritis that causes joint inflammation and stiffness for more than six weeks in children 16 years of age or less. This inflammation can cause redness, swelling, and soreness in the joints and can limit mobility in the areas it affects. Doctors generally classify juvenile rheumatoid arthritis into three categories according to: the number of joints involved, the symptoms, and the presence or absence of certain antibodies in the blood. Treatment options for this condition include nonsteroidal anti-inflammatory drugs and corticosteriods, among other things.