ANATOMY

Detailed explanation-1: -Allergies, anxiety, exercise and illness (like the common cold or the flu) can cause acute dyspnea. More serious conditions, like a heart attack, sudden airway narrowing (anaphylaxis) or blood clot (pulmonary embolism) can also cause acute dyspnea.

Detailed explanation-2: -Shortness of breath-known medically as dyspnea-is often described as an intense tightening in the chest, air hunger, difficulty breathing, breathlessness or a feeling of suffocation.

Detailed explanation-3: -Dyspnea can range from mild to severe. If this condition is chronic and persistent, it may seriously limit activity and reduce quality of life. Dyspnea can be a result of lung, heart, vascular, neuromuscular and metabolic disease.

Detailed explanation-4: -The main symptom of dyspnea is labored breathing. It may last for 1 or 2 minutes after strenuous activity. Or it could be a chronic symptom that persists over longer periods, according to the National Health Service. In mild cases, you may feel like you are not getting quite enough air into your lungs.