Some factors contribute to it such as stress
. When the cause is unknown, you have what's called essential or primary hypertension
. Factors that may lead to high blood pressure
in the remaining 5–10 percent of cases of which there is no know cause, include:
A structural abnormality of the aorta (the large blood vessel leaving the heart) existing since birth
Narrowing of certain arteries
Did the doctor tell you what he suspects the reason is for your high blood pressure? Are you under a lot of stress? Eat a lot of salt?