DefinitionBy Mayo Clinic staff
Heart palpitations (pal-pih-TA-shuns) are the feelings of having rapid, fluttering or pounding heartbeats. Heart palpitations can be triggered by stress, exercise, medication or, rarely, an underlying medical condition.
Although heart palpitations can be worrisome, they're usually harmless, since your heart is usually still pumping effectively. In rare cases, heart palpitations may be a symptom of a more serious heart condition, such as an irregular heartbeat (arrhythmia), that may require treatment.
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