Arthritis is a condition that can cause pain, stiffness, and inflammation in the joints. Common signs of arthritis are weakness and joint pain that comes and goes. It is one of the most common health problems in the United States, affecting more than 50 million adults.
While there are many different types of arthritis, the most common are osteoarthritis and rheumatoid arthritis.
Osteoarthritis is a degenerative joint disease that occurs when the cartilage in the joints breaks down, causing pain, stiffness, and inflammation. Rheumatoid arthritis is an autoimmune disease that causes the body’s immune system to attack the joints, causing pain, swelling, and stiffness.