Sudden shortness of breath may be caused by asthma, emphysema, pneumonia, chronic bronchitis and other diseases, it is recommended to go to the hospital in time for examination to determine the cause of the disease and symptomatic treatment. Sudden shortness of breath can also be caused by the presence of a foreign body in the bronchial tubes, which needs to be removed in a timely manner with professional techniques and sent to the hospital for further examination. Bronchial asthma can also lead to sudden shortness of breath, if the diagnosis of asthma can use albuterol aerosol to relieve symptoms. In addition, usually too many mood swings, too much tension, too much stress can also lead to shortness of breath.