Chest discomfort manifests as chest tightness, shortness of breath, palpitations, chest pain, paying particular attention to whether the disease is caused by myocardial ischemia, which can induce an acute onset of symptoms after labor or after emotional excitement, and may present with pain in the precordial region, radiating to the back of the shoulder. Some atypical patients show, jaw-like pain or toothache, which is considered not necessarily tooth-induced pain, but also toothache caused by chest discomfort, and some hyperplastic diseases will show regular pain in the chest. In women, it is obvious during the premenstrual period and relieved after the period will be accompanied by mood changes, and middle-aged and elderly patients will have mild sweating as well as insomnia symptoms. So there are many symptoms of chest discomfort, such as chest tightness and shortness of breath, difficulty in breathing, palpitations, irritability and other symptoms.