Hypertension, most commonly referred to as 'high blood pressure', HTN or HPN, is a medical condition in which the blood pressure is chronically elevated. It was previously referred to as arterial hypertension, but in current usage, the word 'hypertension' without a qualifier normally refers to arterial hypertension. hypertension can be classified as either essential (primary) or secondary. highly important hypertension indicates that no specific medical incitement can be set up to explain a patient's condition.

Secondary hypertension indicates that the high blood hurry is a result of (i.e. secondary to) another state, such as kidney disease or certain tumors (especially of the adrenal gland). Persistent hypertension is one of the endanger factors for strokes, heart attacks, heart failure and arterial aneurysm, and is a leading bring into existence of chronic renal failure.

Even moderate elevation of arterial blood pressure leads to shortened life expectancy. At severely high pressures, defined as mean arterial pressures 50% or more above average, a person can expect to live no in addition than a few years unless appropriately treated.