The common types of coronary heart disease include angina pectoris and myocardial infarction. AnginaPectoris was translated as “angina pectoris” due to a translation error in China in the early years, but in fact the English word does not mean “angina” and the nature of angina symptoms is not angina pectoris, which is generally not angina. Because many patients have misconceptions about angina, some of the more typical symptoms of angina are often overlooked, and this leads to delays in diagnosis and treatment. Therefore, it is important to better understand the characteristics of angina pectoris (especially typical angina pectoris). It has been found that 60% of ischemic chest pains are typical angina and the rest are atypical. According to the “five elements” of angina pectoris, the clinical characteristics of typical angina pectoris can be summarized as follows: 1. Pain site and range: the anterior region of the chest (i.e., behind the upper or middle part of the sternal body), often accompanied by radiating pain in the left shoulder, neck and arm (Figure 1). The range of pain in the precordial region is usually the size of the palm of the hand, and it is usually not very limited to a particular point of pain. Figure 1 Typical radiating sites of angina pectoris (left neck, left anterior chest, left shoulder, left forearm) 2. Nature of pain: multiple pressure-like pains, pressure, boredom or tightness, often accompanied by anxiety or fear of dying. Generally, it is not pins and needles pain or throbbing pain. It is not “colic”, “grasping pain”, “cutting pain”, “sharp pain”, “pins and needles pain”, or “painful” pain. It is not “colic”, “scratching pain”, “cutting pain”, “sharp pain”, “pins and needles pain” or “electric shock-like pain”. If the attack occurs during activity, the patient often needs to stop and rest (Figure 2). If the pain is tossing and turning and tossing, it is usually not angina. If the pain is accompanied by pressure pain, it is not usually angina pectoris. Figure 2: Because activity can exacerbate myocardial ischemia, typical angina attacks require the cessation of activity, and walking patients are forced to stop walking (standing position). 3. Persistent pain for more than a few hours or days, or pain lasting only a few seconds is generally not angina pectoris. 4, relief mode: most patients can be relieved within a few minutes after rest, or within a few minutes after taking nitroglycerin or heart pills. However, it is worth noting that some patients with chest pain without active coronary heart disease will also have some relief of chest pain symptoms after taking nitroglycerin. 5. Triggers: It usually occurs during physical activity (such as forceful defecation, fast going upstairs, heavy lifting, climbing or physical labor, etc.), emotional excitement, cold, and full meal. It can also occur at rest, at night or when sleeping in the prone position. Patients who have chest pain of unknown origin are asked to compare their symptom characteristics with the above “five elements” of typical angina pectoris and see which of them they match? If the symptoms basically match with the above characteristics, you should pay enough attention to them and seek medical consultation as soon as possible. Even if only some of the characteristics match, you should consult a specialist to make a comprehensive analysis and decide whether further tests are needed.