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Updated visitor guidelines. Top of the page. Low Blood Pressure Hypotension. Topic Overview What is low blood pressure?
The systolic higher number shows how hard the blood pushes when the heart is pumping. The diastolic lower number shows how hard the blood pushes between heartbeats, when the heart is relaxed and filling with blood. What causes low blood pressure? Some of the causes of low blood pressure include: Getting up after you sit or lie down. This can cause a quick drop in blood pressure called orthostatic hypotension. Standing for a long time. Not drinking enough fluids dehydration.
Medicines, such as high blood pressure medicine or other heart medicines. Health problems such as thyroid disease, severe infection, bleeding in the intestines, or heart problems. Trauma, such as major bleeding or severe burns. What are the symptoms? Many people with low blood pressure don't have any symptoms. Symptoms to watch for include: Feeling dizzy, lightheaded, or faint. Feeling sick to your stomach or vomiting.
Feeling more thirsty than usual. Having blurry vision. Feeling weak. Being confused. Being tired. Having cold, clammy skin. Breathing very fast. If you have symptoms of low blood pressure, especially dizziness or fainting, call your doctor. You can also avoid orthostatic hypotension by not crossing your legs when you sit. Shock-induced hypotension is the most serious form of the condition. Severe hypotension must be treated immediately. Emergency personnel will give you fluids and possibly blood products to increase your blood pressure and stabilize your vital signs.
Most people can manage and prevent hypotension by understanding the condition and being educated about it. Learn your triggers and try to avoid them. If you have low blood pressure, you may want to consider changing your diet. Learn which foods to eat and what to avoid. Learn what your blood pressure reading means. Checking your blood pressure at home with a manual or automated device can help you monitor your health between doctor visits.
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Health Conditions Discover Plan Connect. Medically reviewed by Alana Biggers, M. What causes hypotension? Hypotension symptoms. Your blood pressure can vary depending on the time of day.
It gradually increases throughout the day. There are many possible causes of low blood pressure. It may be low because you're fit and healthy, or you may have inherited it from your parents. Page last reviewed: 09 September Next review due: 09 September
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