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Many things can cause palpitations. The following conditions can make the heart beat faster, stronger or more irregularly, so can be a cause of heart palpitations:
• an overactive thyroid
• low blood sugar level
• anaemia
• some types of low blood pressure
• fever
• dehydration (not enough fluid in the body)
• a heart problem (see below)
It may be difficult for your doctor to determine the cause of your palpitations, especially if you are not experiencing them during your office visit. Despite these obstacles, your doctor will review your medical history, ask you about your symptoms, review any medications and herbal products you may be taking, and ask you about your diet.