Harvard Heart Letter

Shortness of breath: A common symptom with many possible causes

Heart and lung issues are often to blame for breathlessness. But an accurate diagnosis may require advanced testing. Like your heartbeat, the regular inhale and exhale of your breathing is something you usually donít notice ó until something doesnít feel quite right. Shortness of breath can result from a range of problems, including an allergic reaction, an anxiety attack, or anemia. But most often, the underlying cause is a heart or lung…

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