Can fever cause high blood pressure?

Are you feeling hot and bothered with a pounding headache? It could be a fever, but did you know that it might also lead to high blood pressure? Yes, you heard it right! This common ailment can have some unexpected effects on your cardiovascular system. In this blog post, we’ll explore the link between fever and hypertension and what steps you can take to manage them both effectively. So sit back, relax and get ready for an informative read!

What is High Blood Pressure?

High blood pressure, also known as hypertension, is a condition in which the force of your blood against your artery walls is high enough that it may eventually cause health problems, such as heart disease.

Blood pressure is determined by the amount of blood your heart pumps and the resistance to blood flow in your arteries. The higher your heart rate, the more blood your heart pumps. The narrower your arteries or the more plaque buildup you have in them, the greater the resistance to blood flow.

Over time, uncontrolled high blood pressure can damage your arteries, heart, brain, kidneys, and other parts of your body.

What Causes High Blood Pressure?

There are many different things that can cause high blood pressure. In most cases, it is caused by a combination of factors. Some of the more common causes include:

  • Being overweight or obese
  • Eating a diet high in salt
  • Not getting enough exercise
  • Having a family history of high blood pressure
  • Stress
  • Smoking cigarettes

In some cases, a fever can also cause high blood pressure. This is more likely to occur if the fever is caused by an infection or another illness. If you have a fever and are also experiencing other symptoms of high blood pressure, such as a headache or feeling dizzy, it is important to see a doctor right away.

How Can Fever Impact High Blood Pressure?

Fever can cause high blood pressure for a number of reasons. One reason is that fever can lead to dehydration, which can in turn cause high blood pressure. Fever can also cause an increase in heart rate and a decrease in blood flow, both of which can contribute to high blood pressure. Finally, fever can cause inflammation and swelling, which can also lead to high blood pressure.

It is important to monitor your blood pressure and seek medical attention if it becomes too high due to fever. If left untreated, high blood pressure can lead to serious health problems such as stroke, heart attack, and even death.

Signs and Symptoms of High Blood Pressure due to Fever

Fever can cause an elevation in blood pressure for several reasons. The most common is due to the body’s release of chemicals called cytokines. Cytokines are released in response to infection and cause fever, among other things. They also stimulate the release of norepinephrine, a hormone that narrows blood vessels and increases blood pressure.

Other less common causes of high blood pressure during fever include dehydration and sepsis (a potentially life-threatening condition caused by infection). Dehydration can cause blood vessels to constrict, which raises blood pressure. And sepsis can cause a dramatic increase in blood pressure as the body tries to fight off the infection.

If you have high blood pressure during a fever, it’s important to monitor your symptoms and seek medical attention if necessary. High blood pressure can be dangerous and may lead to complications such as heart attack or stroke.

Risk Factors for Developing High Blood Pressure due to Fever

There are several risk factors that may contribute to the development of high blood pressure during a fever. One of the most important is the presence of underlying cardiovascular disease. This includes conditions such as coronary artery disease, heart failure, and valvular heart disease. People with these conditions are at increased risk for developing high blood pressure during a fever due to the increased demand on the heart. Other risk factors include dehydration, renal insufficiency, and certain medications that can predispose to hypertension.

Diagnosis and Treatment of High Blood Pressure Due To Fever

If your fever is caused by an infection, treating the infection should help lower your blood pressure. If you have a more serious condition, such as sepsis, hospitalization and aggressive treatment may be necessary to bring down your blood pressure. In some cases, medications may be needed to help lower blood pressure.

Your doctor may recommend medications such as diuretics to help reduce fluid buildup, beta-blockers to reduce the force of your heart’s contractions and decrease your heart rate, ACE inhibitors or ARBs to relax your blood vessels, calcium channel blockers to improve blood flow throughout your body, and/or vasodilators to open up narrowed arteries. Depending on the severity of your symptoms, lifestyle changes may also be recommended. These may include reducing sodium in your diet, getting regular exercise, quitting smoking, and reducing stress levels.

Prevention and Management of High Blood Pressure Due to Fever

Fever can cause high blood pressure for several reasons. First, the body’s natural response to fever is to raise its core temperature. This process requires the release of hormones and other chemicals that can constrict blood vessels and increase heart rate. Second, dehydration from fever can lead to high blood pressure. When the body doesn’t have enough fluids, it tries to compensate by holding on to what it does have, which raises blood pressure. Finally, infections or other illnesses that cause fever can also cause inflammation. Inflammation narrows blood vessels and increases the risk of clotting, both of which can lead to high blood pressure.

There are several things you can do to prevent or manage high blood pressure due to fever:

  • Stay hydrated: Drink plenty of fluids, especially water, even if you don’t feel thirsty. Avoid caffeine and alcohol, which can dehydrate you further.
  • Take over-the-counter medications: Ibuprofen and acetaminophen can help reduce fever and ease pain. Aspirin should be avoided unless directed by a doctor, as it can increase the risk of bleeding.
  • Rest: Fever takes a toll on the body and can make you feel exhausted. Get plenty of rest so your body has time to heal.
  • See a doctor: If your fever is accompanied by severe headaches, chest pain, shortness of breath, or other concerning symptoms, see a doctor right away as these could be signs of a more serious condition.
  • Monitor your blood pressure: If you have been diagnosed with high blood pressure, be sure to monitor it at home or with a doctor’s help.


In conclusion, fever can indeed cause high blood pressure in some individuals. It is important to be aware of this and seek medical attention if you are experiencing symptoms such as a fever with accompanying high blood pressure readings. There are treatments available that can help reduce the risk of serious health problems associated with high blood pressure caused by fever, so it is wise to get checked out and monitored for any changes in your condition.

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