If the patient currently has a painful sensation sticking in the heart, then it is considered that unstable angina may have occurred, or it may be caused by costochondritis, intercostal neuralgia, or due to cardiac neuropathy, which means that it is not an organic heart condition that is causing this discomfort. However, for a more definitive diagnosis, it is recommended that patients have an electrocardiogram, cardiac ultrasound and chest X-ray. Chest radiographs are especially important for the elderly because they do not exclude the possibility of lung cancer or pulmonary occupations that may cause the symptoms of precordial discomfort, and if necessary, patients are advised to combine this with an ambulatory electrocardiogram, which can help detect myocardial ischemia or arrhythmias during the onset of discomfort and help to make a clearer diagnosis. However, whatever the cause, it should be combined with lifestyle interventions to improve.