Why does my heart race?

Question

My heart is generally fast anyway for some reason but starts to race when i go up stairs i'm not unfit im an 18 year old girl why does my heart do this?

Answer 1

You could be having Inappropriate sinus tachycardia (IST).



Inappropriate sinus tachycardia (IST) is a condition in which an individual’s resting heart rate is abnormally high (greater than 100 beats per minute), their heart rate increases rapidly with minimal exertion, and their rapid heart rate is accompanied by symptoms of palpitations, fatigue, and exercise intolerance.



IST is not associated with an abnormal electrical pattern on the ECG. The heart rhythm in IST appears to arise from within the sinus node, the cardiac structure that generates the normal heart rhythm.



IST was recognized as a syndrome only as recently as 1979, and has been generally accepted as a true medical entity only for the past 10 years or so. And even today, while IST is fully recognized as a genuine medical condition by every university medical center, many practicing physicians either haven’t heard of it or write it off as a psychological problem.



Ask your doctor if have IST.

Answer 2

What these people say is correct however an added factor could be that the body must divert some blood to the lower half of the body and therefore require the heart to pump harder leading to a sharp increase in blood pressure combined with sweating and anxiety.

Answer 3

it is normal and it is exertion induced tachycardia.