Patients with heart or chest pain, especially those with prolonged and severe pain, should have further ECG and cardiac enzymes to determine if an acute coronary syndrome is present. If it is an acute myocardial infarction, an urgent coronary angiogram should be performed. In some patients, chest pain is not necessarily caused by cardiac disease. For example, herpes zoster or costochondritis or intercostal neuralgia can also cause chest pain. If the patient has lung space occupation or severe pneumonia, the patient will complain of chest pain and it is recommended that the patient should also have a lung CT as well as a cardiac ultrasound if necessary. Some patients may also suffer from aortic valve stenosis or hypertrophic obstructive cardiomyopathy. Only a better diagnosis will help to formulate the next treatment plan.