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For some people, low blood pressure may be a symptom of an underlying health condition. That's especially so when blood pressure drops suddenly or when low blood pressure occurs with symptoms. A sudden fall in blood pressure can be dangerous. A change of just 20 mm Hg can make you feel dizzy or faint.
To find out if you have low blood pressure, also called hypotension, your healthcare professional gives you a physical exam. You're also asked questions about your medical history. The exam includes checking your blood pressure. You also can measure your blood pressure at home.
Blood pressure drops because there's less blood flowing back to the heart. Usually, special cells (baroreceptors) near the heart and neck arteries sense this lower blood pressure. The baroreceptors send signals to the brain.
This blood pressure chart can help you figure out if your blood pressure is at a healthy level. It also can help you understand if you need to take some steps to improve your numbers. Blood pressure is measured in millimeters of mercury (mm Hg).
Drinking too much alcohol can raise pressure on the walls of blood vessels to unhealthy levels. Having more than three drinks in one sitting raises blood pressure for a short time. Binge drinking over and over can cause long-term rises in blood pressure.
A drop of 20 millimeters of mercury (mm Hg) in the top number (systolic blood pressure) within 2 to 5 minutes of standing is a sign of orthostatic hypotension. A drop of 10 mm Hg in the bottom number (diastolic blood pressure) within 2 to 5 minutes of standing also indicates orthostatic hypotension. Blood tests.
10 ways to control high blood pressure without medication. By making these 10 lifestyle changes, you can lower your blood pressure and reduce your risk of heart disease. By Mayo Clinic Staff. If you have high blood pressure, you may wonder if you need to take medicine to treat it.
Blood pressure has a daily pattern. Usually, blood pressure starts to rise a few hours before a person wakes up. It continues to rise during the day, peaking in midday. Blood pressure typically drops in the late afternoon and evening. Blood pressure is usually lower at night while sleeping.
Answer From Francisco Lopez-Jimenez, M.D. If you're overweight, losing even just 5 pounds (2.3 kilograms) can lower your blood pressure. The more weight lost, the more blood pressure can drop. As you lose weight, it may be possible to reduce your dose of blood pressure medicine.
The vasovagal syncope trigger causes your heart rate and blood pressure to drop suddenly. That leads to reduced blood flow to your brain, causing you to briefly lose consciousness. Vasovagal syncope is usually harmless and requires no treatment.