As soon as it gets cold, I feel short of breath. What happened?

It belongs to airway hyperresponsiveness, which is actually sensitive to cold air, that is to say, the stimulation of this cold air may lead to certain changes, such as coughing, wheezing in severe cases, and may develop into asthma. Pulmonary function and PEF mutation rate should be checked. If asthma or chronic obstructive pulmonary disease can be diagnosed, treat it according to the guidelines. If not, pay attention to protect the respiratory tract and wear a mask in cold weather.