As nouns the difference between prehypertension and prehypertensive
is that prehypertension is a blood pressure higher than normal but not high enough to be considered hypertension while prehypertensive is a person with fairly high blood pressure.
As an adjective prehypertensive is
having prehypertension (fairly high blood pressure).
prehypertension
English
Noun
(-)
A blood pressure higher than normal but not high enough to be considered hypertension.