Chest pain may be a symptom of a number of serious conditions and is generally considered a medical emergency. Even though it may be determined that the pain is non-cardiac in origin, this is often a diagnosis of exclusion made after ruling out more serious causes of the pain. This book gathers and presents topical data on the causes, diagnosis and treatment of chest pain including integrated studies of western and traditional Chinese medicine on Cardiac Syndrome X with chest pain, angina and chest pain, a look at the available prediction instruments that can be used for the classification of acute coronary syndrome (ACS), and ambient nitrogen dioxide and female emergency room visits for chest pain.