Please note that the content of this book primarily consists of articles
available from Wikipedia or other free sources online. A hypertensive
emergency, previously malignant hypertension is severe hypertension
(high blood pressure) with acute impairment of an organ system
(especially the central nervous system, cardiovascular system and/or the
renal system) and the possibility of irreversible organ-damage. In case
of a hypertensive emergency, the blood pressure should be substantially
lowered over minutes to hours with an antihypertensive agent. The eyes
may show retinal hemorrhage, or exudate. A diagnosis of malignant
hypertension must show papilledema.The brain shows manifestations of
increased intracranial pressure, such as headache, vomiting,
subarachnoid, and cerebral hemorrhage.