Hyperventilation, also known as over-breathing or excessive breathing, is when a person's breathing speeds up and deepens. The person may or may not know they are hyperventilating. Hyperventilating can happen for many reasons, be they emotional or medical. If it is a first-time episode or you have other symptoms, seek medical care.

Dyspnea This is when you feel “short of breath,” like your body can’t get enough air. It’s a common symptom of many heart and lung problems, and it can be a sign of something serious, like an.