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High Blood Pressure Signs and Symptoms

A patient having their blood pressure taken by a doctor.

High blood pressure is called the "silent killer" because it often has no warning signs or symptoms, and many people do not know they have it.

Rarely, high blood pressure can cause symptoms like headaches or vomiting.

There's only one way to know whether you have high blood pressure—have a doctor or other health professional measure it. Measuring your blood pressure is quick and painless.