Numerous causes: Palpitations can be caused by extra early beats from either the top or bottom of the heart. They may also be due to a very fast heart rhythm. Sometimes the sensation of palpitation is not due to the heart, but to other causes such as stress. Fatigue, caffeine, drugs, and metabolic problems such as too high of a thyroid level can be a cause. An event monitor can be helpful to find out the cause.
Answered 5/14/2018
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