Shoulder pain is generally an imbalance of the mechanics of the shoulder. Tightness, lack of strength and or inflammation can cause chemical and mechanical receptors to fire off information registering as pain. Usually these symptoms are the result of poor work posture, bad sporting technique, acute injuries such as falls onto out stretched arms or overuse injuries. Overuse of the tendon leading to bursae inflammation. More violent stresses can lead to subluxations or dislocation.
