Coronary heart disease is a heart disease caused by the narrowing or blockage of coronary arteries, resulting in insufficient blood and oxygen supply to the heart muscle, or even necrosis. Patients or their family members often come to the clinic to ask if chest pain is coronary heart disease. Is it possible that other diseases may also cause chest pain? With this question, we count which diseases may also lead to chest pain symptoms. First, fatal chest pain, as the name suggests, that is, at any time there may be life-threatening chest pain disorders, clinically, including the three main categories: coronary heart disease, aortic coarctation, pulmonary embolism. 1, coronary heart disease coronary heart chest pain is one of the most common clinical chest pain, mainly including angina pectoris, myocardial infarction. Coronary heart disease chest pain is episodic, most of the pain behind the sternum or precordial area, part of the chest pain will radiate to the throat, the left shoulder arm and back, usually occurs in the intense exertion or nervousness behind the sternum, angina pectoris lasts for 3-5 minutes, after containing the “fast-acting heart pills”, “nitroglycerin” or after resting to relieve themselves. The angina may last for 3-5 minutes, and can be relieved by taking “quick-acting heart pills” “nitroglycerin” or resting, and there is no discomfort after the chest pain is relieved. If the chest pain is severe and lasts more than 30 minutes, accompanied by sweating, chest tightness and even a sense of dying, often suggests that the patient may have developed into an acute myocardial infarction. Should immediately call the emergency telephone emergency examination, if it is clear that the acute myocardial infarction, should be carried out as soon as possible coronary artery examination, if necessary, the coronary intervention (that is, stenting), open the blood vessels, to save lives. 2, aortic coarctation Aortic coarctation patients with chest pain usually occurs in strenuous activities or emotional excitement, chest pain at the beginning and reach the peak, radiating to the back, severe tear-like pain, accompanied by profuse sweating, irritability, and even fainting, sudden death and so on. Most of these patients are combined with hypertension, and usually have poor blood pressure control, and even never take antihypertensive drugs, so that the blood pressure has been at a high level. If the blood pressure is abnormally high, chest pain is obvious and severe, and the patient is irritable, and at the same time the electrocardiogram has no significant abnormal changes, then the possibility of aortic coarctation should be considered. Emergency investigation of aortic CTA can clarify the diagnosis. 3.Pulmonary embolism Chest pain in patients with pulmonary embolism is sometimes atypical, often accompanied by chest tightness, shortness of breath, the symptoms occur in deep inhalation or coughing or activities, and some patients even have hemoptysis, fainting and other symptoms. If the patient has a large pulmonary embolism, it will directly affect the hemodynamics, and there will be a drop in blood pressure, increased heart rate, or even shock. Most of these patients have risk factors for pulmonary embolism, such as: prolonged bed rest, lower extremity fracture, lower extremity venous thrombosis, postoperative fracture, lower extremity trauma fracture, malignant tumor, easy thrombosis, etc. In general, these patients are admitted to the hospital for blood coagulation, D-dimer, electrocardiogram, cardiac ultrasound and pulmonary artery vascular CT can be a clear diagnosis. Non-fatal diseases, i.e. chest pain diseases that do not immediately endanger life, mainly include lung diseases, chest wall diseases, pericardial diseases, esophageal diseases and other diseases. 1. Pericardial diseases mainly refers to acute pericarditis, manifested as chest pain, fever at the same time, located in the anterior region of the heart, varying in severity, severe narrowing or sharp pain, inhalation and coughing pain aggravated, pericardial exudate more pain can be alleviated, but there will be difficulty in breathing. 2. Lung diseases mainly include: (1) spontaneous pneumothorax The pain of pneumothorax patients is mostly manifested as pain on one side, which is not intense and often accompanied by chest tightness and shortness of breath. Symptoms mostly occur when holding heavy objects, strenuous activities or coughing after activities or when coughing violently. This kind of disease is mostly seen in tall and thin healthy young people, long-term chronic lung diseases, pulmonary alveoli, emphysema patients, if you meet such patients, you should go to the hospital emergency checkup lung auscultation and chest radiographs can confirm the diagnosis. (2) Lung tumor: Patients may have chest pain, which is aggravated by whistling and coughing. In addition to chest pain, early patients may have irritating cough, chest tightness and shortness of breath, even hemoptysis, accompanied by gradual weight loss, fatigue and loss of appetite. (3) Pneumonia pleurisy Chest pain is obvious when coughing or deep inhalation, with history of respiratory tract infection, mostly accompanied by fever, cough, sputum, and even chest tightness and shortness of breath. The above symptoms can be relieved after applying anti-infective drugs. 3. Chest wall diseases mainly include (1) intercostal neuralgia, which manifests as pinprick pain in the chest or back, which is instantaneous but recurrent and lasts for a few seconds or minutes, and can be relieved on its own, with the pain ranging from a localized point to an unsettled part. The pain may be relieved by removing the triggers and the symptoms may disappear. (2) Herpes zoster Chest or lumbar skin sensory hypersensitivity or neuralgia, pinprick-like, localized skin with obvious tenderness, followed by clusters of red papules the size of corn grains, rapidly turning into blisters. Generally, the pain is on one side, and there is a history of cold or infection. (3) Purulent costochondritis The pain occurs in the 2nd-4th rib cartilage next to the sternum, and the 2nd rib cartilage is the most common, and it can be involved unilaterally or bilaterally, and the affected rib cartilage can be locally enlarged and elevated, and the pain is dull or sharp, with obvious localized tenderness, and the skin does not have redness and swelling, and the severe cases can be aggravated by the chest pain due to the activities of the upper limbs or the coughing and other motions. Chest pain lasts for a long time, up to several hours. 4. Other chest pain disorders mainly include: (1) reflux esophagitis chest pain manifested as burning pain located in the back of the sternum, mostly occurring in the lying position or when bending over after a full meal, which may be accompanied by acid reflux, heartburn and other symptoms. (2) Cardiac neurosis: Chest pain is often located in the apical region of the heart, often stabbing pain or hidden pain, for a few seconds or a few hours, often accompanied by chest tightness, shortness of breath, palpitations, insomnia and other symptoms. Symptoms are mostly related to emotional tension and excitement, not related to physical activity and exertion, and often appear at rest and are relieved by activity or distraction. It is mostly seen in female patients. (3) Sympathetic cervical spondylosis is caused by factors such as degeneration of intervertebral discs and segmental instability, which stimulate the sympathetic nerve endings around the cervical vertebrae, resulting in sympathetic nerve dysfunction. Clinical manifestations include pain in the precordial region, dizziness, dizziness, tinnitus, numbness of the hands, tachycardia and a series of sympathetic symptoms, and cervical spine X-rays are helpful for differentiation.