Diseases and Conditions
Juvenile idiopathic arthritis
Overview
Symptoms
Causes
Risk factors
Complications
Diagnosis
Treatment
Lifestyle and home remedies
Coping and support
Preparing for an appointment
Causes
Juvenile idiopathic arthritis occurs when the body's immune system attacks its own cells and tissues. It's not known why this happens, but both heredity and environment seem to play a role.
