Joint pain (arthralgia) is a symptom that indicates inflammation, cartilage wear, injury, or a systemic disease of the body. Possible causes: Arthritis is an inflammatory process in the joint, including rheumatoid or infectious types. Arthrosis (osteoarthritis) is the degenerative destruction and wear of articular cartilage over time. Injuries include sprains, ligament or meniscus tears, and dislocations. Gout is a metabolic disorder in which uric acid salts are deposited in the joints. Infections: Common viral illnesses (such as the flu) often cause temporary joint pain.