There are many causes of asthma, chest tightness and dyspnea, which can be due to insufficient air, dyspnea (laryngeal obstruction, tracheal stenosis due to inflammation, edema, foreign body or mass compression), respiratory effort, and paralysis of respiratory muscles.
Dyspnea can be categorized into pulmonary dyspnea, cardiac dyspnea, toxic dyspnea, hemorrhagic dyspnea, and dyspnea caused by other reasons.
1. Common diseases of pulmonary dyspnea include pneumonia, asthma, acute respiratory distress syndrome, tuberculosis, chronic obstructive pulmonary disease, acute pulmonary edema, etc. The mechanism of dyspnea may be related to pulmonary solid lesions (e.g., pulmonary hypertension). The mechanism may be related to lung solid changes (reduction of air-containing tissues in the lungs), pulmonary atelectasis or tracheal stenosis.
2. Common diseases of cardiac dyspnea include: severe arrhythmia, acute left heart failure, etc. The mechanism may be related to the anterior and posterior load on the myocardium. The mechanism of dyspnea may be related to the increase of myocardial anterior and posterior loads, resulting in pulmonary edema or circulatory failure.
3. Common diseases of toxic dyspnea include: drug poisoning, snake bite, etc. The mechanism may be related to paralyzed respiratory muscles. The mechanism may be related to respiratory muscle paralysis.
4. The common diseases of hemorrhagic dyspnea include: severe anemia, acute hemorrhage, etc. The mechanism may be related to hemoglobin reduction. The mechanism may be related to decreased hemoglobin, decreased ability to transport oxygen, or other factors.
5. Other causes such as laryngeal obstruction. The mechanism may be related to laryngeal obstruction leading to narrowing of the airway.
If the symptoms of shortness of breath, chest tightness and dyspnea worsen, and there is extreme difficulty in breathing, or even respiratory distress, it is recommended to seek medical attention promptly and as early as possible, and a doctor may be required to perform a tracheotomy if necessary.