I often feel chest tightness and shortness of breath. What's going on?

Chest tightness and shortness of breath often occur. Generally, it is considered to be caused by arrhythmia, coronary heart disease, etc. It can also be considered to be caused by factors such as autonomic nerve dysfunction, cardiac neurosis, chronic respiratory diseases, etc. You need to go to the hospital in time for ECG, cardiac ultrasound and other examinations.