High Blood Pressure (Hypertension)

When to Call a Doctor

Call 911or other emergency services immediately if you have any of the following symptoms:

Call a doctor immediately if you have high blood pressure and:

  • Your blood pressure is usually normal or well controlled, but it suddenly goes well above the normal range on more than one occasion.
  • Your blood pressure is 180/110 millimeters of mercury (mm Hg) or higher.

Call a doctor if:

  • Your blood pressure is 140/90 mm Hg or higher on two or more occasions (taken at home or in a community screening program). If one blood pressure measurement is high, have another reading taken by a health professional to verify the first reading. Many doctors' offices or clinics will take blood pressure measurements without an appointment.
  • You have significant side effects from any medicine you take for high blood pressure. The side effects may be so bad that you do not want to take your medicine anymore. Talk with your doctor before you stop taking your medicine.

Adults are encouraged to have their blood pressure checked regularly.

Who to See

Your blood pressure can be checked:

  • At a clinic where you work or go to school.
  • At health fairs, fitness centers, community centers, fire stations, and ambulance stations.
  • By a nurse practitioner or physician assistant.
  • By a primary care doctor.

For diagnosis and management of high blood pressure, see:

More information


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Author: Robin Parks, MSLast Updated: April 24, 2007
Medical Review: Caroline S. Rhoads, MD - Internal Medicine
Robert A. Kloner, MD, PhD - Cardiology
Ruth Schneider, MPH, RD - Diet and Nutrition

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Topic Contents
 Overview
 Health Tools Click here to view Health Tools.
 FAQs
 Cause
 Symptoms
 What Happens
 What Increases Your Risk
Arrow PointerWhen to Call a Doctor
 Exams and Tests
 Treatment Overview
 Prevention
 Living With High Blood Pressure
 Medications
 Surgery
 Other Treatment
 Other Places To Get Help
 Related Information
 References
 Credits