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Dyspnea (/dɪspˈniːə/ disp-NEE-ə; also dyspnoea; Latin: dyspnoea; Greek: δύσπνοια, dýspnoia), shortness of breath (SOB), or air hunger, is the subjective symptom of breathlessness.
The clinical definition of dyspnea is an uncomfortable awareness of one's breathing effort. It is a normal symptom of heavy exertion but becomes pathological if it occurs in unexpected situations. In 85% of cases it is due to either asthma, pneumonia, cardiac ischemia, interstitial lung disease, congestive heart failure, chronic obstructive pulmonary disease, or psychogenic causes. Treatment typically depends on the underlying cause.
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