In the early stages of rheumatoid arthritis (RA), people may first notice tenderness, stiffness, and pain in the small joints in the hands and feet. RA is characterized by damaging inflammation ...
Juvenile idiopathic arthritis (JIA) is arthritis that affects children and whose cause is unknown (idiopathic). It has six subtypes that vary in symptoms. All JIA subtypes cause joint pain, swelling, ...