This word is acceptable for play in the US & UK dictionaries that are being used in the following games:

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n. Difficulty in breathing, often associated with lung or heart disease and resulting in shortness of breath. Also called air hunger.

n. Difficult or labored respiration.

"Additional findings showed that factors associated with long-term dyspnea in cancer survivors included presence of dyspnea before lung cancer surgery, reduced diffusion capacity"

symptom   

inspiratory dyspnœa    cardiac dyspnœa    expiratory dyspnœa    traube's dyspnœa    renal dyspnœa   

orthopnea    breathlessness    shortness of breath    sob   

flatulency    stridor    eyestrain    ofgällivare    expensiveness    overindulgence    laryngitis    sunstroke    syncope    dentition