Dyspnea or dyspnoea (pronounced disp-nee-ah, IPA /dɪsp'niə/), from Latin dyspnoea, from Greek dyspnoia from dyspnoos, shortness of breath) or shortness of breath (SOB)'s a debilitating symptom that's the experience of unpleasant or uncomfortable respiratory sensations. It's a common symptom of numerous medical disorders, particularly those involving the cardiovascular and respiratory systems; dyspnea on exertion's the most common presenting complaint for people with respiratory impair… (More on Breathlessness)