Although there are many kinds of arthritis, the most common type of arthritis, osteoarthritis (OA), frequently affects the knee ...

Shoulder pain can occur suddenly with an injury, such as a fall on the shoulder. However, many people develop shoulder pain without any injury ...

In autoimmune diseases, the immune system can malfunction and identify a normal healthy part of the body, such as skin cells or kidney cells, and attack them ...

Fibromyalgia is a chronic condition that can cause multiple symptoms. A patient with fibromyalgia may have just one or many of these symptoms ...

Gout is a common form of arthritis that is caused by an excess of uric acid. Uric acid is a normally occurring chemical made by the tissues of the body ...