Benefits include:. Join Now See All Benefits. Thank you for your patience. Feeling dizzy, faint or light-headed after standing due to a sudden drop in blood pressure can be a minor problem due to medication use or dehydration. But when it happens often, it can be a sign of a more serious condition called orthostatic hypotension, which is defined as a drop in blood pressure within three minutes of sitting or standing.
This is also the first study to date suggesting the disease is a milder form of the more common and serious disorder. Of those, 48 were diagnosed with delayed orthostatic hypotension, 42 had orthostatic hypotension and 75 did not have either condition. Decreases in receptor responsiveness delay the normal heart and blood vessel responses to standing.
Paradoxically, high blood pressure, which is more common among older people, may contribute to poor receptor sensitivity, increasing vulnerability to dizziness when standing.
Dizziness or light-headedness when standing typically involves a decrease in body fluid volume or autonomic nervous system dysfunction. Aging often causes some degree of autonomic nervous system dysfunction, but doctors examine all affected people to ensure that no nervous system disorders are present.
Treatment involves physical measures to reduce venous pooling, regular exercise, increased salt intake, and sometimes fludrocortisone or midodrine. Merck and Co. From developing new therapies that treat and prevent disease to helping people in need, we are committed to improving health and well-being around the world.
The Manual was first published in as a service to the community. Learn more about our commitment to Global Medical Knowledge. This site complies with the HONcode standard for trustworthy health information: verify here. Common Health Topics. Courtesy of. Common causes. Warning signs When to see a doctor What the doctor does Testing. Essentials for Older People. Key Points. Symptoms of Heart and Blood Vessel Disorders.
Test your knowledge. An aortic dissection occurs when the inner layer lining of the aortic wall tears and separates from the middle layer of the wall. Aortic dissection is frequently fatal. Among which of the following groups is aortic dissection most common? More Content. Click here for the Professional Version. Malfunction of the autonomic nervous system due to disorders or drugs.
Causes differ depending on whether symptoms are new or have been present for some time. The most common causes of new dizziness when standing up include.
Decreased blood volume as may result from dehydration or blood loss. Age-related changes in blood pressure regulation. Blood in the stool or black, tarry stool. How long the dizziness has been occurring. Whether the person is taking a drug for example, an antihypertensive that may cause dizziness. Was This Page Helpful? Yes No. Dizziness and Vertigo. Overview of the Autonomic Nervous System. Feelings of faintness come from its effect on your heart rate and blood pressure. Ever had an anxiety attack?
You probably breathed more rapidly and deeply, both of which can lead to lightheadedness and dizziness. When you get that lightheaded feeling, lie down or sit down and place your head between your knees. A trained medical professional can pinpoint the exact cause of your presyncope. Urgent care, primary care and emergency care: What's the difference? Find a Geisinger ConvenientCare near you.
Visit geisinger. Wellness Articles. Some people feel dizziness more often than others, but it can happen to anyone — and it may be worth checking with your doctor. Potential causes of presyncope include: Orthostatic hypotension Also called postural hypotension, this is the head rush you sometimes feel when you stand up.
Heart arrhythmia This condition also known as an abnormal heart rate is when your heart beats too fast, too slow or in a way that causes a sudden decrease in the blood supply to your brain. Medications Medicines prescribed for pain, heart conditions and high blood pressure can affect your circulatory system and — you guessed it — feeling dizzy.
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