Arrhythmias Asthma Blocked air passages from a stuffy nose or throat phlegm Carbon monoxide poisoning Cardiac tamponade (excess fluid around the heart) Chronic obstructive pulmonary disease Congenital heart disease Coronary artery disease Croup Dust, mold, or pollen allergy Epiglottitis Extreme temperatures Heart attack Heart failure Hiatal hernia Low blood pressure (hypotension) Altitude sickness Obesity Pneumonia and other pulmonary infections Pneumothorax Pulmonary embolism Pulmonary hypertension Stress Anxiety disorder Sudden blood loss Upper airway obstruction (blockage in the breathing passage) Very strenuous exercise
Pulmonologist
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