When the weather is hot, I feel chest tightness and general weakness, as if I can't breathe. What's going on here? How to nurse?

Chest tightness and shortness of breath can be roughly divided into two types.

One is psychogenic chest tightness, which is characterized by staying in a closed space for a certain period of time, low air pressure and sultry weather. When you don't quarrel or argue with others, you will have symptoms of chest tightness and fatigue. After a short rest, ventilation and emotional adjustment, you can return to normal. This kind of chest tightness does not need to be nervous or treated.

Second, organic chest tightness is often caused by cardiopulmonary dysfunction or organic cardiopulmonary diseases, and usually relieves slowly or gradually. Please go to the hospital as soon as possible.

As you said, I think you belong to the former. Pay attention to maintain an optimistic attitude in aftercare, open the window for ventilation and cool down appropriately. Or had some uncomfortable experiences when you were young, you should find a professional psychologist for treatment.