Rheumatoid Arthritis (RA) Overview
Learn all about rheumatoid arthritis, including the causes, symptoms, and treatment.
Browse More on Rheumatoid Arthritis
A Visual Guide to RA
RA is an autoimmune disorder that causes inflammation of the lining of the joints. The body tissue is mistakenly attacked by its own immune system.
Juvenile Rheumatoid Arthritis (JRA) Explained
Think your child might have JRA? Learn about the symptoms and when to call the doctor.
Rheumatoid Arthritis (RA) Causes & Risk Factors
Learn how genetics, gender, and other factors increase the chances of developing RA.
Hand & Finger RA
Find out about symptoms and treatments of hand and finger RA, including an explanation of swan-neck deformity and boutonniere deformity.
RA of the Knee
Rheumatoid arthritis of the knee causes the joints to become tender, warm, and swollen. Although knee osteoarthritis causes pain and stiffness, joint pain with knee RA is more severe.
RA of the Hip
Symptoms of hip arthritis may occur later than those from RA affecting smaller joints.
Signs of Joint Damage From RA
Learn how to find out if your RA is active and how you can prevent joint damage.