Shoulder pain can stem from one or more of the following causes: 1  Strains from overexertion. 2  Tendonitis from overuse. 3  Shoulder joint instability. 4  Dislocation. Collar or upper arm bone fractures.  Frozen 1  shoulder. Pinched nerves (also called radiculopathy)
Joint pain can affect one or more joints. Joint pain can be caused by many types of injuries or conditions. It may be linked to arthritis, bursitis, and muscle pain. No matter what causes it, joint pain can be very bothersome. Some things that can cause joint pain are: Autoimmune diseases such as rheumatoid arthritis and lupus.
Considerations. Joint swelling may occur along with joint pain. The swelling may cause the joint to appear larger or abnormally shaped. Joint swelling can cause pain or stiffness. After an injury, swelling of the joint may mean you have a broken bone or a tear in the muscle tendon or ligament.