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Definition
By Mayo Clinic staffFew sensations are as frightening as not being able to get enough air. Although shortness of breath — known medically as dyspnea — is likely to be experienced differently by different people, it's often described as an intense tightening in the chest or feeling of suffocation. You may experience shortness of breath just once or have recurring episodes.
Unaccustomed or strenuous exercise — even if you're in good shape — extreme temperatures and high elevations can cause shortness of breath. More often, though, shortness of breath is a sign of a medical problem. No matter what the cause, breathing problems should be taken seriously. If you have unexplained shortness of breath, see your doctor as soon as possible.
