Rheumatoid Arthritis

10 Basic Facts about Rheumatoid Arthritis


RA affects 1.3 million Americans

Onset usually occurs between 30 and 50

Juvenile idiopathic arthritis is the term for arthritis in children

Gender is a factor

The exact cause of RA is unknown

Rheumatoid arthritis is an autoimmune disease

The immune system plays a role in RA inflammation

Morning stiffness is a hallmark symptom

Joint swelling and pain also are classic symptoms

Nodules can occur

The HealthCentral Editorial Team

The HealthCentral Editorial Team


HealthCentral's team of editors based in New York City and Arlington, VA, collaborates with patient advocates, medical professionals, and health journalists worldwide to bring you medically vetted information and personal stories from people living with chronic conditions to help you navigate the best path forward with your health—no matter your starting point.