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Symptoms
By Mayo Clinic staffPrehypertension doesn't cause symptoms. In fact, even advanced high blood pressure may not cause symptoms.
The only way to detect prehypertension is to keep track of your blood pressure readings. Have your blood pressure checked at each doctor's visit — or check it yourself at home with a home blood pressure monitoring device. Blood pressure measurements from a device in a pharmacy or other public location may not be accurate if the cuff isn't the right size for you or if the device hasn't been serviced regularly.
When to see a doctor
Ask your doctor for a blood pressure reading at least once every two years. You may need more frequent readings if you have prehypertension or other risk factors for cardiovascular disease.
