Patients with chest tightness subjectively feel that they do not have enough breath or that they are struggling to breathe, and in severe cases, they lift a heavy object that presses against their chest. Chest tightness may be one of the early symptoms of the disease, or it may be a functional manifestation of the body organs. If the symptoms of chest tightness appear, you need to go to the hospital in time to check and determine the cause of chest tightness. 1, the symptoms of functional chest tightness: Patients stay for a long time in a room with closed doors and windows and poor air circulation, or encounter certain unpleasant things, or even have a verbal dispute or argument with others, or are in a climate with low air pressure, often produce a feeling of chest tightness and fatigue. After a short period of rest, opening windows or going outside to breathe fresh air, relaxing the mind and regulating emotions, you can soon return to normal. This type of chest tightness can be said to be functional chest tightness, no need to be nervous, and no need to treat. 2, the symptoms of pathological chest tightness: pathological chest tightness (i.e. chest tightness with organic lesions): chest tightness can be not only physiological, but also caused by disease in certain organs of the body, i.e. pathological chest tightness. For example: 1. respiratory obstruction: tracheobronchial tumor, tracheal stenosis, external pressure on the trachea (goiter, mediastinal tumor); 2. lung diseases: emphysema, bronchitis, asthma, atelectasis, pulmonary infarction, pneumothorax; 3. heart diseases: certain congenital heart diseases rheumatic heart valve disease, coronary heart disease, heart tumor; 4. diaphragm lesions: diaphragm expansion disease, diaphragm paralysis; 5. body fluid metabolism and Acid-base balance imbalance, etc. The symptoms of pathological chest tightness can occur suddenly or slowly. Most of the sudden occurrence is due to acute traumatic or spontaneous pneumothorax, acute asthma, acute endotracheal heart attack, acute pulmonary infarction, etc. Slow onset chest tightness, on the other hand, is a gradual worsening of symptoms as the course of the disease increases. In children, chest tightness mostly indicates congenital heart disease or mediastinal tumor; in young people, chest tightness mostly indicates spontaneous pneumothorax, mediastinal tumor, rheumatic heart valve disease; in elderly people, chest tightness mostly indicates emphysema, coronary heart disease, etc. If chest tightness occurs, you need to go to the hospital for examination in time to avoid delaying the treatment of the primary disease. Chest tightness examination includes chest fluoroscopy, electrocardiogram, echocardiogram, blood biochemistry and other tests as well as lung function measurement to further confirm the diagnosis.