There are many factors that can cause chest pain, besides coronary artery disease, there are also, for example, other cardiomyopathies, hypertension or respiratory diseases that can trigger chest pain: First, for high-risk chest pain, for example, patients presenting with pneumothorax due to various factors, or with pulmonary embolism or aortic coarctation, these chest pains are more dangerous factors, and patients will have symptoms of severe precordial pain and chest pain. Second, for moderate risk factors, such as patients with acute myocarditis, acute pericarditis, infective endocarditis, and pericardial compression. In addition, large lung infection, large pleurisy, and pleural effusion can also trigger chest pain. Thirdly, for mild dangerous chest pain, such as herpes zoster pain or patients with intercostal neuralgia, they will have symptoms and sensations of chest pain.