You probably have high blood pressure (hypertension) if your blood pressure readings are consistently 140 over 90, or higher, over a number of weeks.
You may also have high blood pressure if just one of the numbers is higher than it should be over a number of weeks.
If you have high blood pressure, this higher pressure puts extra strain on your heart and blood vessels. Over time, this extra strain increases your risk of a heart attack or stroke.
High blood pressure can also cause heart and kidney disease, and is closely linked to some forms of dementia.
You can check your blood pressure on our Blood Pressure Chart.
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What are the signs and symptoms of high blood pressure?
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High blood pressure usually has no signs or symptoms, so the only way to know if you have high blood pressure is to have yours measured. However, a single high reading does not necessarily mean you have high blood pressure. Many things can affect your blood pressure through the day, so your doctor will take a number of blood pressure readings to see that it stays high over time.
Occasionally people with very high blood pressure say they experience headaches, but it is best to visit your GP if you are concerned about symptoms.
Source : bloodpressureuk.org/BloodPressureandyou/Thebasics/Whatishigh
Symptoms of High Blood Pressure
One of the most dangerous aspects of hypertension is that you may not know that you have it. In fact, nearly one-third of people who have high blood pressure don’t know it. The only way to know if your blood pressure is high is through regular checkups. This is especially important if you have a close relative who has high blood pressure.
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If your blood pressure is extremely high, there may be certain symptoms to look out for, including:
Severe headache
Fatigue or confusion
Vision problems
Chest pain
Difficulty breathing
Irregular heartbeat
Blood in the urine
Pounding in your chest, neck, or ears
If you have any of these symptoms, see a doctor immediately. You could be having a hypertensive crisis that could lead to a heart attack or stroke.
Source : webmd.com/hypertension-high-blood-pressure/guide/hypertension-symptoms-high-blood-pressure
When to see a doctor
You’ll likely have your blood pressure taken as part of a routine doctor’s appointment.
Ask your doctor for a blood pressure reading at least every two years starting at age 18. Blood pressure should be checked in both arms to determine if there is a difference. Your doctor will likely recommend more frequent readings if you’ve already been diagnosed with high blood pressure or other risk factors for cardiovascular disease. Children age 3 and older will usually have their blood pressure measured as a part of their yearly checkups.
If you don’t regularly see your doctor, you may be able to get a free blood pressure screening at a health resource fair or other locations in your community. You can also find machines in some stores that will measure your blood pressure for free, but these machines can give you inaccurate results.
Source : www.mayoclinic.org/diseases-conditions/high-blood-pressure/basics/symptoms/con-20019580