There are many possible causes of chest pain.  One of the most common of course, is Heart Attack which is  primarily caused by Coronary Artery Disease.

Other causes of chest pain include anxiety, upper respritory infection, shingles, GERD (heartburn), or broken rib.

Other causes which are serious but less common include pneumothorax (collapsed lung), pulmonary embolism (blood clot in the lung), lung cancer and degenerative spine disease.

This information is not intended to replace the advice of a doctor.