- JRA (Juvenile Rheumatoid Arthritis) : JRA is the acronym of Juvenile Rheumatoid Arthritis that refers to a form of arthritis in children ages 16 or younger that causes inflammation and stiffness of the joints.
- JRA (Juvenile Rheumatoid Arthritis) : JRA is the acronym of Juvenile Rheumatoid Arthritis that refers to a form of arthritis in children ages 16 or younger that causes inflammation and stiffness of the joints.