Many conditions can make you feel short of breath: Lung conditions such as asthma, emphysema, or pneumonia. Problems with your trachea or bronchi, which are part of your airway system. Heart disease can make you feel breathless if your heart cannot pump enough blood to supply oxygen to your body.

Causes of shortness of breath include asthma, bronchitis, pneumonia, pneumothorax, anemia, lung cancer, inhalation injury, pulmonary embolism, anxiety, COPD, high altitude with lower oxygen levels, congestive heart failure, arrhythmia, allergic reaction, anaphylaxis, subglottic stenosis, interstitial lung disease

The most common causes of dyspnea are asthma, heart failure, chronic obstructive pulmonary disease (COPD), interstitial lung disease, pneumonia, and psychogenic problems that are usually linked to anxiety. If shortness of breath starts suddenly, it is called an acute case of dyspnea