Rheumatoid Arthritis

What is rheumatoid arthritis?

Rheumatoid arthritis, or RA, is an autoimmune and inflammatory disease, which means that your immune system attacks healthy cells in your body by mistake, causing inflammation (painful swelling) in the affected parts of the body.

What is the main cause of rheumatoid arthritis?

Rheumatoid arthritis is an autoimmune condition, which means it's caused by the immune system attacking healthy body tissue.