Unmasking the varied causes of breathlessness and fatigue - Harvard Health

Cardiopulmonary exercise testing can help diagnose unusual causes of breathlessness, such as pulmonary hypertension or heart failure with preserved ejection fraction....

One of the vexing things about certain common health complaints is the range of possible underlying causes. For example, feeling short of breath is perfectly normal after a burst of vigorous exercise… [+757 chars]

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