How many types of Arthritis are there?

How many types of arthritis are there?

Researchers have identified more than 100 different types of arthritis. The most common are osteoarthritis, rheumatoid arthritis, and gout.

What is osteoarthritis?

The most common type of arthritis, osteoarthritis (OA) is generally associated with aging and joint wear and tear. It can also result from other disorders such as diabetes. OA affects many joints, from the large, weight-bearing joints of the hips and knees to the smaller joints of the spine, hands, feet, and shoulders.

What is rheumatoid arthritis?

Rheumatoid arthritis (RA) is a long-lasting disease where the immune system—the body's defense against disease—mistakenly attacks itself and causes the joint lining to swell. The inflammation then spreads to the surrounding tissues, where it can damage cartilage and bone. RA can affect joints in any part of the body, but the hands, wrists, and knees are the most common. In more severe cases, rheumatoid arthritis can affect the skin, eyes, nerves, and internal organs.

What is gout?

Gout is a painful condition that occurs when the body cannot eliminate a natural substance called uric acid. The excess uric acid forms needle-like crystals in the joints that cause swelling and severe pain. Gout most often affects the big toe, knee, and wrist joints.


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