William's mother Louise Riddler said: "They [doctors] put it down to just a virus when his knee ... including children. Most types of childhood arthritis are known as Juvenile Idiopathic Arthritis ...

Children with refractory systemic juvenile idiopathic arthritis–related lung disease had complete remission after stem cell ...

Arthritis is usually associated with older people, but kids can suffer too. Juvenile idiopathic arthritis (JIA) is the most ...