Patients with dizziness, nausea, chest tightness and shortness of breath may be caused by heart disease, cerebrovascular disease, or plant nerve dysfunction, depending on the patient’s onset trigger and the degree of dizziness and chest tightness. 1. If the patient’s symptoms of chest tightness, shortness of breath and dizziness are more serious, they may be caused by heart disease, such as because of myocardial ischemia, coronary artery disease, or arrhythmia. For example, frequent premature ventricular beats, atrial fibrillation and other problems, must promptly consult the cardiology department for examination and treatment. 2, if it occurs in the case of prolonged late night, mental tension, anxiety, the above symptoms are relatively mild, consider it caused by plant nerve dysfunction. 3, the patient dizziness will also be accompanied by sympathetic excitation, resulting in nausea, chest tightness, shortness of breath, increased heart rate.