Juvenile atrophic arthritis (JRA), often mentioned by doctors today as juvenile idiopathic arthritis (JIA), may be a sort of arthritis that causes joint inflammation and stiffness for quite six weeks during a child aged 16 or younger. Symptoms of juvenile arthritis may include: Joint stiffness, especially within the morning, Pain, swelling, tenderness within the joints, Limping (In younger children, it's going to appear that the kid isn't ready to perform motor skills he or she recently learned.), Persistent fever, Rash, Weight loss, Fatigue, Irritability