As you are not feeling well and, so far, have no explanation or reassurance for your symptoms, it would be worthwhile getting a second opinion.
There are a few simple tests that could be done to rule out serious causes of palpitations. You need to have your thyroid gland tested because an overactive thyroid can cause palpitations and fast heart rates. This is done by having a simple blood test. The heart rate can be monitored for longer than 24 hours, to catch potential palpitations and arrhythmias that happen less frequently.
You could also ask your doctor if you can have a longer heart monitor test to try and catch one of the episodes.
Answered by Dr Emmajane Down.
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