Hypertension describes a condition where the sufferer s blood pressure is greater than that of most other people. It is also called, high blood pressure, and the, silent killer. When the pressure of blood increases, the delicate tissues of our organs degrade faster. This causes a premature cellular breakdown and degeneration of tissue, leading to organ failure and death, if left untreated. Essential Hypertension is idiopathic, chronic high blood pressure. There is no known cause, yet it is a continual condition. This type of high blood pressure can typically be treated by diet and exercise. Secondary Hypertension is high blood pressure that is being caused by some other condition that already exists. Like kidney disease. This would be termed secondary renal hypertension. There are many different types of secondary hypertension. But in a nutshell, hypertension is high blood pressure.