Whether it’s acute or chronic, joint pain is common among adults in the U.S. Joint pain can be caused by an injury, such as a sprain or a strain. Sometimes an injury or inflammation of a joint can cause bursitis or tendinitis. Other times joint pain may be a sign of arthritis. Athletes, for example, can develop osteoarthritis from the demands they put on their bodies which can cause wear and tear on the joints. Rheumatoid arthritis (RA) is also a big issue for many adults. RA is a disease of the immune system that sparks inflammation in the body and harms the joints. Conventional doctors typically prescribe medications for.