Osteoarthritis
Sometimes called degenerative joint disease or "wear and tear" arthritis, osteoarthritis (OA) is the most common chronic condition of the joints. It occurs when the cartilage or cushion between joints breaks down leading to pain, stiffness and swelling.
The most common symptoms of osteoarthritis are stiffness, particularly first thing in the morning or after resting, and pain. Affected joints may get swollen after extended activity.