This can be a sign of cardiac arrest, an enlarged heart, an infection, pneumonia, or a conventional case of bronchitis. If you have chest pain, go to a doctor and get evaluated.
There could be a number of causes. Acid Reflux can cause pain, stress can cause pain, depression, there is an inflamation of the cartilidge (can't recall the name at this time).
Cardiac Syndrome X is the name given to this condition. It produces angina-like chest pain often with signs of cardiac ischemia although coronary artery disease is absent.
