Hypertension is a common clinical picture, and an important risk factor for coronary heart disease. Hypertensive episodes, also known as severe hypertension, a rapid rise in blood pressure from normal levels, may occur in 1% of patients with chronic hypertension. There are two clinical types: acute hypertensive crisis, often accompanied by target organ damage, and hypertensive urgency.

There are two cases of dangerous hypertension, namely, hypertensive emergency and hypertensive emergency. In particular, hypertensive emergency has the risk of causing serious damage if not treated promptly and properly.

Hypertensive emergency is an urgent emergency that threatens the patient's life, so the physician needs to have an appropriate attitude.