Definition of Malignant hypertension:

Malignant hypertension is very high blood pressure that comes on suddenly and quickly. The lower (diastolic) blood pressure reading, which is normally around 80 mmHg, is often above 130 mmHg.

Causes, incidence, and risk factors:

The disorder affects about 1% of people with high blood pressure, including both children and adults. It is more common in younger adults, especially African-American men.

It also occurs in people with:

• Collagen vascular disorders
• Kidney problems
• Toxemia of pregnancy

You are at high risk for malignant hypertension if you have had:

• Kidney failure
• Renal hypertension caused by renal artery stenosis