If the patient suddenly develops chest tightness and uncomfortable symptoms, this condition is highly considered to be caused by the onset of coronary artery disease and angina pectoris symptoms. It is advisable for the patient to measure the heart rate and blood pressure and have an electrocardiogram done during the onset of the uncomfortable symptoms to help further clarify, when the onset of the uncomfortable symptoms, whether there are changes in the electrocardiogram. It is also possible that some patients may have coronary artery spasm or may have cardiac neuropathy, which may also lead to such discomfort, and patients are advised to have a cardiac ultrasound, coronary CT, if necessary, and if the patient has chest tightness for a longer period of time, patients are advised to have cardiac enzymes checked, as it is important to clarify whether acute coronary syndrome has occurred. In addition to this, patients are advised to have active medication to improve their treatment. For example, it is recommended that patients can start with sublingual cardiac pills or compound salvia drops during episodes of discomfort.