What are the Symptoms of Low Blood Pressure(HBP)?

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{SCA} On its own, low blood pressure (hypotension) does not always cause symptoms. If you have low blood pressure, and you do not have any symptoms, you do not require treatment.

However, low blood pressure can sometimes mean that there is not enough blood flowing to your brain and other vital organs. As a result, you may experience some of the following symptoms:

  • dizziness,
  • fainting (a sudden, temporary loss of consciousness),
  • light-headedness,
  • blurred vision,
  • palpitations (a rapid, or irregular, heart beat),
  • confusion,
  • nausea (feeling like you are going to be sick), and
  • general weakness.

If you experience the symptoms of hypotension after changing positions – for example, standing up – it is known as postural, or orthostatic, hypotension. If you experience these symptoms after eating, it is known as postprandial hypotension.

Postural or orthostatic hypotension

Postural, or orthostatic, hypotension occurs when your blood pressure falls after a sudden movement. For example, you may feel dizzy, or faint, after changing posture, such as sitting up from a lying position, or standing up from a sitting position. This may cause you to lose your balance and fall over. You may also feel light headed, have blurred vision, or lose consciousness.

The symptoms of postural or orthostatic hypotension should only last a few minutes as your blood pressure adjusts to your new position. This type of low blood pressure tends to affect people more as they get older when it can lead to more frequent falls. Similar symptoms may also occur after exercise.

Postprandial hypotension

Your blood pressure can sometimes decrease (fall) after eating, causing dizziness, light-headedness, fainting, and falls. This condition, known as postprandial hypotension, tends to occur more often in older people, particularly in those who have high blood pressure, or a condition such as Parkinson’s disease, or diabetes.

After a meal, your intestines need a large amount of blood for digestion. Your heart rate increases and the blood vessels in other parts of your body constrict (narrow) to help maintain blood pressure. If your heart rate does not increase enough, or if your blood vessels do not constrict enough to maintain blood pressure, your blood pressure will fall. This can then cause symptoms.