Some people have high blood pressure caused by an underlying condition. Secondary high blood pressure, also called secondary hypertension, tends to appear suddenly and cause higher blood pressure than does primary hypertension.
Various conditions and medications can lead to secondary hypertension including the following:
Kidney problems, adrenal gland tumors, certain defects in blood vessels you are born with (congenital), certain medications, such as birth control pills, cold remedies, decongestants, over-the-counter pain relievers and some prescription drugs, illegal drugs, such as cocaine and amphetamines.
Anyone whose high blood pressure is 140/90mmhg or more for a sustained period is said to have high blood pressure, or hypertension.