The weather was cold the past two days. No one opened the windows on the bus. After a few stops, I felt out of breath. I was particularly hypoxic, panicked, and felt weak all over.

Problem analysis:

Hello, it should be one of the main symptoms of cardiac insufficiency, which can be seen in acute bronchiolitis, bronchial asthma, emphysema, etc., due to lung tissue Decreased elasticity and spasm of small bronchi.

Opinions and suggestions:

It is recommended to actively treat symptoms based on local clinicians and your own condition, and do not blindly use medication!