Arthritis is a general name for a group of conditions involving damage to the joints of the body. Arthritis is the leading cause of disability in people older than fifty-five years. There are different forms of arthritis; each has a different cause. The most common form of arthritis, osteoarthritis (degenerative joint disease) is a result of trauma to the joint, infection of the joint, or age. Other arthritis forms are rheumatoid arthritis and psoriatic arthritis, autoimmune diseases in which the body attacks itself....
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