Palpitations can occur normally when your heart is working hard. For example, you might feel a rapid or irregular heartbeat when you have just exercised, have a fever, or are feeling anxious. At these times your heart may pump faster or increase the amount of blood it pumps with each beat. This is a normal response to lifting weights, walking up a hill, or becoming emotionally excited. Often you may not even notice this increased heart activity.
Medical conditions that can also cause palpitations include:
Anemia
Anxiety
Some thyroid problems
Hypoglycemia (low blood sugar)
Mitral valve prolapse, a mild deformity of one of the valves in your heart
A very common cause of palpitations is the overuse of stimulants, including caffeine (coffee, tea, sodas), nicotine, diet pills, and medications such as decongestants. Accidental overdose of some medicines can cause palpitations. Examples of such medicines are theophylline, antidepressants, and thyroid hormone replacement.
Another less common cause of palpitations is a type of abnormal heartbeats called premature beats, PVCs (premature ventricular contractions), or ectopic beats. These are abnormal beats that are not a problem if they occur just once in a while. However, if they occur frequently or in sequence, they can lead to problems.
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Submitted 352 days ago...
I have this recurrent heart palpitation-
It just occurs during exertion like standing suddenly,and beats harder and faster for a few seconds. i also seem to get winded easier lately. i have never had any health problems before so this is unnerving at times. this started a couple weeks ago is all. i made a dr. appt. and was shooed into the ER,where they put wires all over me and acted like i was dying of a heart attack.no one listened to me. i was not in pain nor having an episode then. after all their tests,the dr. said he didnt know. does anyone have a better idea than this dr. about what is happening to me?
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