High blood pressure
is divided into primary and secondary hypertension
secondary hypertension occurs in 10 % of patients and is due to other underlying diseases " kidney diseases, hormonal
disorders ... " or medications , and is treated by treating the cause.
is said to be idiopathic which means that it has no known cause , but many factors play a role in it including genetics, obesity , diabetes
if you want more detailed information i advice you to have a look at the Health Information Center :
which can give you more detailed explanation with scientific terms and so on .