You may not know that there are more than 100 different forms of arthritis that have been identified. You also may not know that arthritis does not just affect adults; unfortunately children can also contract this ailment. Kids are prone to a form of this illness known as juvenile rheumatoid arthritis. Arthritis in children has a lot of the same symptoms as those experienced by adults. But you should know that there are certain differences as well. Juvenile rheumatoid arthritis is a serious