Malignant hypertension is diagnosed by a physical examination. An eye exam will show changes that signal very high blood pressure. A healthcare provider will also take a person's blood pressure. When blood pressure is measured, there are two numbers that are reported, for example, 140/90. The top number is the systolic blood pressure, and the bottom number is the diastolic blood pressure. An example of extremely high blood pressure is 220/140.
Other signs that a person has malignant hypertension include:
These signs indicate a medical emergency. Blood pressure must be controlled quickly to avoid permanent damage to internal organs and death.