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Essential hypertension (also called primary hypertension, or idiopathic hypertension) is a form of hypertension without an identifiable physiologic cause. [1] [2] It is the most common type affecting 85% of those with high blood pressure. [3] [4] The remaining 15% is accounted for by various causes of secondary hypertension. [3]
Benign hypertension or benign essential hypertension are medical terms now considered obsolete, but once used to describe mild to moderate hypertension (high blood pressure). These historical terms are considered misleading, [1] as hypertension is never benign. Coonsequently, the terms have fallen out of use (see history of hypertension).
The pathophysiology of hypertension is an area which attempts to explain mechanistically the causes of hypertension, which is a chronic disease characterized by elevation of blood pressure. Hypertension can be classified by cause as either essential (also known as primary or idiopathic) or secondary. About 90–95% of hypertension is essential ...
Lesions reflect leakage of plasma components across vascular endothelium and excessive extracellular matrix production by smooth muscle cells, usually secondary to hypertension. [ 11 ] Hyaline arteriolosclerosis is a major morphologic characteristic of benign nephrosclerosis , in which the arteriolar narrowing causes diffuse impairment of renal ...
Secondary hypertension (or, less commonly, inessential hypertension) is a type of hypertension which has a specific and identifiable underlying primary cause. It is much less common than essential hypertension , affecting only 5-10% of hypertensive patients.
Rupture may be indicated by the presence of free fluid in the abdomen. A contrast-enhanced abdominal CT scan is the best test to diagnose an AAA and guide treatment options. [14] In 2019, some 170,000 people worldwide died from AAA rupture, with aging, smoking, and hypertension as principal factors.
The high blood pressure is gradual at early stages and may take at least 10–15 years to fully develop. Besides diabetes, other factors that may also increase high blood pressure include obesity, insulin resistance and high cholesterol levels. In general, fewer than 25 percent of diabetics have good control of their blood pressure.
Hypertension or high blood pressure affects at least 26.4% of the world's population. [15] Hypertensive heart disease is only one of several diseases attributable to high blood pressure. Other diseases caused by high blood pressure include ischemic heart disease, cancer, stroke, peripheral arterial disease, aneurysms and kidney disease.