If you get high BP measurement on at least three occasions few weeks apart, then only you can be labelled as hypertensive. If this is the case, you should get full work up done to find out any secondary cause of hypertension
. Get ECG
and 2D Echo
done to look for Concentric LVH. Young hypertensives have high likelihood of having a seconday cause of hypertension. Overall, 95% hypertension has no cause though.