Bystander CPR may help cardiac arrest survivors return to work, A new look at treating Alzheimer's disease, Atrial fibrillation: The latest treatment trends, Many older adults take unneeded blood pressure drugs, Get trusted advice from the doctors at Harvard Medical School, Learn tips for living a healthy lifestyle, Stay up-to-date on the latest developments in health, Receive special offers on health books and reports. Dizziness and vertigo. Get emergency medical care if you experience new, severe dizziness or vertigo along with any of the following: Loop-shaped canals in your inner ear contain fluid and fine, hairlike sensors that help you keep your balance. Your dizziness may be accompanied by nausea or be so sudden or severe that you need to sit or lie down. Accessed Aug. 5, 2018. "Vertigo can lead to falls and injury.

Ever fainted?

Although it is often hard to tell the difference, your answer may have a big impact on how the doctor moves forward with diagnosis. Instead, it’s … Check out the risk estimator at health.harvard.edu/heartrisk. National Institute of Neurological Disorders and Stroke. If you feel lightheaded, Dr. Grossman recommends having a drink of water or orange juice and lying down. Some of these reasons are common and not worrisome, but others need more evaluation.”, Even if you don’t faint from it, that drop in blood pressure or heart rate can cause lightheadedness, that very specific yet hard to describe feeling that you might pass out. It’s tricky to know when fainting or lightheadedness is a cause for concern—even doctors often feel stumped. Enter search terms and tap the Search button. Get health information and advice from the experts at Harvard Medical School. Dizziness that creates the false sense that you or your surroundings are spinning or moving is called vertigo. If you’re dizzy, you may also experience a sensation of spinning that’s called vertigo. Peripheral vestibular disorders. The decrease in blood flow that leads to feeling lightheaded could be caused by a blood clot in the brain, Dr. Burroughs Peña says, which can cause what’s called an ischemic stroke. "Are you feeling lightheaded or dizzy?"

Bope ET, et al.

Sometimes it's caused by an underlying health condition, such as poor circulation, infection or injury. Dehydration. Prevention participates in various affiliate marketing programs, which means we may get paid commissions on editorially chosen products purchased through our links to retailer sites.

Some people are simply predisposed to feeling lightheaded or even fainting when they … Within these cells are tiny particles (otoconia) that help monitor the position of your head in relation to gravity and linear motion, such as going up and down in an elevator or moving forward and backward in a car. Heat injury and heat exhaustion. These include your: Vertigo is the false sense that your surroundings are spinning or moving.

Some people over age 60 have few, if any, symptoms of an underactive thyroid gland (hypothyroidism), while others experience the same symptoms younger people do. "If they work too well, they'll lower your blood pressure too much and make you lightheaded.

Any use of this site constitutes your agreement to the Terms and Conditions and Privacy Policy linked below. Unsteadiness or a loss of balance 4. It's a real problem, particularly in the elderly, and in many cases, it can be prevented," he says. As for the other 10 percent, an underlying health condition could be to blame, and that could mean potentially serious health concerns down the road. This may be a long-term problem, but there are medications to treat it, such as midodrine (ProAmatine) and fludrocortisone (Florinef), so this too warrants a trip to your doctor.

"Don't ignore it. “Heat triggers a pathway in the nervous system that causes blood pressure to drop.”. Please note: If you have a promotional code you'll be prompted to enter it prior to confirming your order.

Accessed Aug. 5, 2018. Here’s What Sugar Really Does to Your Brain. It’s not a fear of heights, as lots of people believe. The fix may be as simple as adjusting the dose or trying a different drug. People experiencing dizziness may describe it as any of a number of sensations, such as: 1. “It’s common in a hot room, like standing in church in the summer,” Thiruganasambandamoorthy says. “It’s still a blood pressure change that causes the lightheadedness, but it’s an immune reaction that causes it.”. But don't ignore bouts of dizziness, warns Dr. Grossman. As a service to our readers, Harvard Health Publishing provides access to our library of archived content. Accessed Aug. 5, 2018. Mayo Clinic does not endorse companies or products. Diuretics are notorious for this," says Dr. Grossman. A similar reaction can be triggered when your college roommate jumps out from behind the couch at your surprise birthday party. Doctors explain what causes that woozy feeling, from dehydration to serious medical conditions.