Key Points
Dyspnea is the sensation of not being able to satisfy air hunger.
The history and physical examination are essential in determining the cause of the dyspnea.
Pulmonary disease that causes dyspnea can be classified as obstructive, restrictive, or vascular, although there are also many non-pulmonary causes.
Close observation of children with acute dyspnea is essential because they can decompensate quickly.
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