About arthritis

Arthritis is a disease of the joints (the areas where two bones meet). It often causes pain, swelling, and stiffness in your joints. It’s called a chronic disease because it doesn’t go away and a progressive disease because it can get worse. Osteoarthritis (OA) is the most common type of arthritis.

Another type of arthritis is inflammatory arthritis, which includes rheumatoid arthritis (RA). It’s possible to have more than one type.

• About osteoarthritis
  Find out more about OA and what you can do to manage it.
• About rheumatoid arthritis
  Learn more about RA, including causes, symptoms and how it is diagnosed.