Rheumatoid Arthritis (RA) is a chronic inflammatory disorder that typically affects the small joints in your hands and feet. Unlike the wear-and-tear of osteoarthritis, RA affects the lining of your joints, causing a painful swelling that can eventually result in bone erosion and joint deformity.
An autoimmune disorder, RA occurs when your immune system mistakenly attacks your own body's tissues. In addition to causing joint problems, Rheumatoid Arthritis can also affect your whole body with fevers and fatigue.
Rheumatoid Arthritis is much more common in women than in men and generally occurs between the ages of 40 and 60. Treatment focuses on controlling symptoms and preventing joint damage.
The above text was taken from Mayoclinic.com, for a more in-depth summary, click here.
