Polyarticular Juvenile Idiopathic Arthritis
Polyarticular juvenile idiopathic arthritis (JIA) is a chronic autoimmune condition affecting five or more joints during the first six months of disease onset in children
chronic joint inflammation
Oligoarticular Juvenile Idiopathic Arthritis
Oligoarticular juvenile idiopathic arthritis (JIA) is the most common subtype of juvenile idiopathic arthritis, a chronic autoimmune disorder affecting children under the age of 16.