:( My daughter aged 18 years complained of her heart beat reaching 130 beat/min even when not exercising.
The rapid heartbeat can happen at any time of the day during any kinds of activities and may last 5 to 10 minutes.
During such times, she experiences shortness of breath.
There may be times she said that she experiences little prickling like pin *****s on the feet.
ECG shows that it is not a heart problem.
Blood test taken does not indicate that it is a thyroid problem.
What can it possibly be ?
Plse help to suggest.