Arthritis Arthritis is a disease that involves inflammation of one or more joints. ("Arthr" refers to joints, and "itis" to inflammation.) Joint inflammation is the body's reaction to various disease processes. These include mechanical injury to a joint (including fracture), the presence of an infection (usually caused by bacteria or viruses), an attack on the joints by the body itself (an autoimmune disease), or accumulated "wear and tear" on joints. With some injuries and … [Read more...]