Pain in the left or right shoulder can be a warning sign of a heart attack, relates WebMD. Pain can begin in the chest area and radiate out to other body parts like down both arms, the neck, or the jaw. However, there are many other causes for shoulder pain.
Some other cause for this condition can be a nerve impingement, a ruptured tendon, osteoarthritis, a cartilage problem and bursitis, states the Mayo Clinic. A fracture is another possible cause for left shoulder pain.
Besides pain in the chest and shoulder areas, heart attacks can have other accompanying symptom such as feeling faint, nausea, heart palpitations and breathing problems, reports WebMD. If a person experiences any of these symptoms, it is advisable to seek medical attention.