https://www.healthcentral.com/slideshow/10-basic-facts-about-rheumatoid-arthritis
Rheumatoid Arthritis

10 Basic Facts about Rheumatoid Arthritis

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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

HealthCentral's team of editors based in Arlington, Virginia, 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.