What causes chest tightness and shortness of breath?

Analysis of illness: There are two reasons for chest tightness and shortness of breath, one is functional chest tightness and shortness of breath, and the other is caused by cardiac neurosis. Suggestion: Functional chest tightness refers to staying in a room with closed doors and windows and no ventilation for a long time, or encountering some unpleasant things, even arguing with people, or in a climate with low air pressure, which often leads to chest tightness and fatigue. Cardiac neurosis is a common neurosis. Its symptoms are varied, the most common conscious symptoms are palpitation, dyspnea, precordial pain and general fatigue, as well as irritability, insomnia, sweating, trembling, dizziness and dreaminess. Life care: If you have chest tightness symptoms, you should go to the hospital as soon as possible, and you can do chest X-ray, electrocardiogram, B-ultrasound, blood analysis and other examinations to find out the reasons and receive treatment in time.