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Why do I suddenly have high blood pressure?

High levels of stress can lead to a temporary increase in blood pressure. Stress-related habits such as eating more, using tobacco or drinking alcohol can lead to further increases in blood pressure. Certain chronic conditions.

mayoclinic.org - High blood pressure (hypertension) - Symptoms and causes - Mayo Clinic

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Overview

What is hypertension? A Mayo Clinic expert explains. Learn more about hypertension from nephrologist Leslie Thomas, M.D. Show transcript for video What is hypertension? A Mayo Clinic expert explains. Hi. I'm Dr. Leslie Thomas, a nephrologist at Mayo Clinic. In this video, we'll cover the basics of hypertension. What is it? Who gets it? The symptoms, diagnosis, and treatment. Whether you're looking for answers for yourself or someone you love, we're here to give you the best information available. Hypertension means high blood pressure. A blood pressure measurement includes two numbers. Those numbers are the systolic blood pressure and the diastolic blood pressure. Because of the pumping action of the heart, the pressure within the arteries cycles between a higher pressure and a lower pressure. The higher pressure occurs during the contraction of the heart's left ventricle. The higher pressure is known as the systolic blood pressure. The lower pressure occurs during the relaxation of the heart's left ventricle. This lower pressure is referred to as the diastolic blood pressure. Who gets it? Hypertension is a very common condition affecting up to 40% of adults. It is one of the most common conditions for which medications are prescribed. Most people with hypertension have primary hypertension. How primary hypertension develops is not entirely understood. However, it has felt to result from many inherited and environmental factors that interact in complex ways within the body. Risks for the development of primary hypertension include family history, advancing age, obesity, high sodium diet, alcohol consumption and physical inactivity. In cases of hypertension in which a specific cause is identified, the term secondary hypertension is used. Many potential causes of secondary hypertension exist. These causes include certain prescription or over-the-counter medications, kidney disease, certain endocrine disorders, or a significant narrowing of the aorta or a kidney artery. What are the symptoms? Rarely, an individual with very high blood pressure may have symptoms. These symptoms might include shortness of breath, blurry vision or headache. How is it diagnosed? Hypertension can be diagnosed by performing careful and repeated measures of the blood pressure. Blood pressure categories include normal blood pressure, defined as a systolic pressure less than 120, and a diastolic pressure less than 80. Elevated blood pressure is defined as a systolic pressure 120 to 129, and a diastolic pressure less than 80. Hypertension is defined as systolic pressure greater than or equal to 130, or a diastolic pressure greater than or equal to 80. How is it treated? Treatment of hypertension involves lifestyle modification alone or in combination with antihypertensive medication therapy. For individuals with certain common conditions, including cardiovascular disease, chronic kidney disease, and diabetes mellitus. Certain medications may be more advantageous to use compared to other medications. Deciding upon the best blood pressure to target, when to start antihypertensive medication therapy, and which specific medication or a combination of medications to utilize is highly individualized and informed by many factors. What now? You and your care team can work together to create the best treatment plan for you. No matter what methods you decide on. There are plenty of reasons to be optimistic about managing your hypertension. If you'd like to learn even more about hypertension, watch our other related videos or visit mayoclinic.org. We wish you well. High blood pressure is a common condition that affects the body's arteries. It's also called hypertension. If you have high blood pressure, the force of the blood pushing against the artery walls is consistently too high. The heart has to work harder to pump blood. Blood pressure is measured in millimeters of mercury (mm Hg). In general, hypertension is a blood pressure reading of 130/80 mm Hg or higher. The American College of Cardiology and the American Heart Association divide blood pressure into four general categories. Ideal blood pressure is categorized as normal.)

Normal blood pressure. Blood pressure is 120/80 mm Hg or lower.

Blood pressure is 120/80 or lower. Elevated blood pressure. The top number ranges from 120 to 129 mm Hg and the bottom number is below, not above, 80 mm Hg . The top number ranges from 120 to 129 and the bottom number is below, not above, 80 . Stage 1 hypertension. The top number ranges from 130 to 139 mm Hg or the bottom number is between 80 and 89 mm Hg . The top number ranges from 130 to 139 or the bottom number is between 80 and 89 . Stage 2 hypertension. The top number is 140 mm Hg or higher or the bottom number is 90 mm Hg or higher. Blood pressure higher than 180/120 mm Hg is considered a hypertensive emergency or crisis. Seek emergency medical help for anyone with these blood pressure numbers.

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Untreated, high blood pressure increases the risk of heart attack, stroke and other serious health problems. It's important to have your blood pressure checked at least every two years starting at age 18. Some people need more-frequent checks. Healthy lifestyle habits —such as not smoking, exercising and eating well — can help prevent and treat high blood pressure. Some people need medicine to treat high blood pressure.

Symptoms

Most people with high blood pressure have no symptoms, even if blood pressure readings reach dangerously high levels. You can have high blood pressure for years without any symptoms.

A few people with high blood pressure may have:

Headaches

Shortness of breath

Nosebleeds

However, these symptoms aren't specific. They usually don't occur until high blood pressure has reached a severe or life-threatening stage.

When to see a doctor

Blood pressure screening is an important part of general health care. How often you should get your blood pressure checked depends on your age and overall health. Ask your provider for a blood pressure reading at least every two years starting at age 18. If you're age 40 or older, or you're 18 to 39 with a high risk of high blood pressure, ask for a blood pressure check every year. Your care provider will likely recommend more-frequent readings if have high blood pressure or other risk factors for heart disease. Children age 3 and older may have blood pressure measured as a part of their yearly checkups. If you don't regularly see a care provider, you may be able to get a free blood pressure screening at a health resource fair or other locations in your community. Free blood pressure machines are also available in some stores and pharmacies. The accuracy of these machines depends on several things, such as a correct cuff size and proper use of the machines. Ask your health care provider for advice on using public blood pressure machines. There is a problem with information submitted for this request. Review/update the information highlighted below and resubmit the form. From Mayo Clinic to your inbox Sign up for free, and stay up to date on research advancements, health tips and current health topics, like COVID-19, plus expertise on managing health. Email ErrorEmail field is required ErrorInclude a valid email address Learn more about Mayo Clinic’s use of data. To provide you with the most relevant and helpful information, and understand which information is beneficial, we may combine your email and website usage information with other information we have about you. If you are a Mayo Clinic patient, this could include protected health information. If we combine this information with your protected health information, we will treat all of that information as protected health information and will only use or disclose that information as set forth in our notice of privacy practices. You may opt-out of email communications at any time by clicking on the unsubscribe link in the e-mail. Subscribe! Thank you for subscribing! You'll soon start receiving the latest Mayo Clinic health information you requested in your inbox. Sorry something went wrong with your subscription Please, try again in a couple of minutes Retry

Causes

Blood pressure is determined by two things: the amount of blood the heart pumps and how hard it is for the blood to move through the arteries. The more blood the heart pumps and the narrower the arteries, the higher the blood pressure.

There are two main types of high blood pressure.

Primary hypertension, also called essential hypertension

For most adults, there's no identifiable cause of high blood pressure. This type of high blood pressure is called primary hypertension or essential hypertension. It tends to develop gradually over many years. Plaque buildup in the arteries, called atherosclerosis, increases the risk of high blood pressure.

Secondary hypertension

This type of high blood pressure is caused by an underlying condition. It tends to appear suddenly and cause higher blood pressure than does primary hypertension. Conditions and medicines that can lead to secondary hypertension include:

Blood vessel problems present at birth, also called congenital heart defects

Cough and cold medicines, some pain relievers, birth control pills, and other prescription drugs

Illegal drugs, such as cocaine and amphetamines

Kidney disease

Obstructive sleep apnea

Thyroid problems

Sometimes just getting a health checkup causes blood pressure to increase. This is called white coat hypertension.

Risk factors

High blood pressure has many risk factors, including:

Age. The risk of high blood pressure increases with age. Until about age 64, high blood pressure is more common in men. Women are more likely to develop high blood pressure after age 65. The risk of high blood pressure increases with age. Until about age 64, high blood pressure is more common in men. Women are more likely to develop high blood pressure after age 65. Race. High blood pressure is particularly common among Black people. It develops at an earlier age in Black people than it does in white people.

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High blood pressure is particularly common among Black people. It develops at an earlier age in Black people than it does in white people. Family history. You're more likely to develop high blood pressure if you have a parent or sibling with the condition. You're more likely to develop high blood pressure if you have a parent or sibling with the condition. Obesity or being overweight. Excess weight causes changes in the blood vessels, the kidneys and other parts of the body. These changes often increase blood pressure. Being overweight or having obesity also raises the risk of heart disease and its risk factors, such as high cholesterol. Excess weight causes changes in the blood vessels, the kidneys and other parts of the body. These changes often increase blood pressure. Being overweight or having obesity also raises the risk of heart disease and its risk factors, such as high cholesterol. Lack of exercise. Not exercising can cause weight gain. Increased weight raises the risk of high blood pressure. People who are inactive also tend to have higher heart rates. Not exercising can cause weight gain. Increased weight raises the risk of high blood pressure. People who are inactive also tend to have higher heart rates. Tobacco use or vaping. Smoking, chewing tobacco or vaping immediately raises blood pressure for a short while. Tobacco smoking injures blood vessel walls and speeds up the process of hardening of the arteries. If you smoke, ask your care provider for strategies to help you quit. Smoking, chewing tobacco or vaping immediately raises blood pressure for a short while. Tobacco smoking injures blood vessel walls and speeds up the process of hardening of the arteries. If you smoke, ask your care provider for strategies to help you quit. Too much salt. A lot of salt — also called sodium — in the body can cause the body to retain fluid. This increases blood pressure. A lot of salt — also called sodium — in the body can cause the body to retain fluid. This increases blood pressure. Low potassium levels. Potassium helps balance the amount of salt in the body's cells. A proper balance of potassium is important for good heart health. Low potassium levels may be due to a lack of potassium in the diet or certain health conditions, including dehydration. Potassium helps balance the amount of salt in the body's cells. A proper balance of potassium is important for good heart health. Low potassium levels may be due to a lack of potassium in the diet or certain health conditions, including dehydration. Drinking too much alcohol. Alcohol use has been linked with increased blood pressure, particularly in men. Alcohol use has been linked with increased blood pressure, particularly in men. Stress. High levels of stress can lead to a temporary increase in blood pressure. Stress-related habits such as eating more, using tobacco or drinking alcohol can lead to further increases in blood pressure. High levels of stress can lead to a temporary increase in blood pressure. Stress-related habits such as eating more, using tobacco or drinking alcohol can lead to further increases in blood pressure. Certain chronic conditions. Kidney disease, diabetes and sleep apnea are some of the conditions that can lead to high blood pressure. Kidney disease, diabetes and sleep apnea are some of the conditions that can lead to high blood pressure. Pregnancy. Sometimes pregnancy causes high blood pressure. High blood pressure is most common in adults. But kids can have high blood pressure too. High blood pressure in children may be caused by problems with the kidneys or heart. But for a growing number of kids, high blood pressure is due to lifestyle habits such as an unhealthy diet and lack of exercise.

Complications

The excessive pressure on the artery walls caused by high blood pressure can damage blood vessels and body organs. The higher the blood pressure and the longer it goes uncontrolled, the greater the damage.

Uncontrolled high blood pressure can lead to complications including:

mayoclinic.org - High blood pressure (hypertension) - Symptoms and causes - Mayo Clinic

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