Low blood pressure

Need to know

• What are the symptoms and causes of low blood pressure? icon plus

  If your blood pressure is lower than normal, you may not have any symptoms. However, hypotension can be a problem if it causes symptoms like:

  • fainting (syncope)
  • nausea dizziness or lightheadedness
  • blurred or tunnel vision feeling weak

  You may have symptoms if you stand for too long or stand up too quickly. Low blood pressure can also be related to pregnancy, dehydration, vitamin deficiency or diabetes. A sudden or severe drop in blood pressure can lead to shock, which can be a life-threatening condition.

  Seek emergency medical care if you or someone you know experience: fast, shallow breathing a weak pulse pale, cold and clammy skin

• Diagnosing low blood pressure icon plus

  Your blood pressure is usually taken as part of a routine health check. Your consultant or GP may also recommend 24-hour blood pressure monitoring, also known as ambulatory blood pressure monitoring, to monitor if and how your blood pressure fluctuates throughout the day.

  Ambulatory blood pressure monitoring can also be a good alternative if being in a hospital environment affects your blood pressure. If your blood pressure reading is below 90/60mmHg, it's considered low. Your GP, consultant, or nurse will explain your reading to you. If you've been fainting or feeling dizzy when standing, you may also have a tilt-table test.

• Potential treatment options icon plus

  Treatment for low blood pressure will depend on your symptoms, overall health or any underlying cause. Your GP or consultant will talk to you about your condition and explain the best approach for you.
  
  They may suggest changes to your existing medication if this is likely to be contributing to your low blood pressure. Eating small, healthy meals frequently throughout the day and staying well hydrated may also help. Compression stockings may also help to improve your circulation and blood pressure.