Can Fever Really Cause Low Blood Pressure in Children and Adults?

The Mystery Unveiled: Can Fever Really Cause Low Blood Pressure in Children and Adults?

Have you ever heard someone say that they feel weak and dizzy when they have a fever? Or perhaps you’ve experienced it yourself. It’s not uncommon for people to assume that having a fever automatically means your blood pressure is high. But what if we told you that the opposite could be true? That’s right, today we’re going to dive into the mystery of whether or not fever can actually cause low blood pressure in both children and adults! So buckle up and get ready to uncover some surprising facts about this often misunderstood topic.

Introduction to Low Blood Pressure and Fever

When a person has a fever, their body temperature rises above the normal range. This can cause many different symptoms, including low blood pressure and fatigue. In some cases, a fever can also lead to delirium or coma. A person with a fever may also have an increased heart rate and respiration.

Causes of Low Blood Pressure in Children and Adults

There are many possible causes of low blood pressure. Some causes are more common in children, while others are more common in adults.

One possible cause of low blood pressure is dehydration. This can happen if a child or adult doesn’t drink enough fluids or loses too much fluid through sweating, vomiting, or diarrhea.

Another possible cause of low blood pressure is a drop in blood volume. This can happen if there is bleeding or if the body isn’t making enough red blood cells.

Certain medications can also cause low blood pressure. These include diuretics, beta blockers, and some types of antidepressants.

In some cases, low blood pressure may be caused by an underlying health condition such as heart disease, endocrine problems, or kidney disease.

Relationship Between Fever and Low Blood Pressure

There are many myths and misconceptions about fever and low blood pressure. Some people believe that fever can cause low blood pressure, but this is not true. Fever does not cause low blood pressure. Low blood pressure is a symptom of many different conditions, including dehydration, infection, and heart disease.

Fever is caused by a rise in body temperature due to an infection or other illness. When the body experiences a fever, its natural response is to increase blood flow and reduce the amount of fluid flowing through the vessels. This reduction can result in a decrease in blood pressure.

However, fever does not directly cause low blood pressure. Low blood pressure is usually caused by an underlying condition that should be diagnosed and treated. If you have both a fever and low blood pressure, it is important to speak with your doctor right away to determine the cause of your symptoms and provide appropriate treatment.

Symptoms of Low Blood Pressure Associated with Fever

Fever can cause a number of different symptoms in children and adults, one of which is low blood pressure. Low blood pressure associated with fever can cause dizziness, lightheadedness, and even fainting. In severe cases, it can lead to shock. If you or your child has a fever and is experiencing any of these symptoms, it is important to seek medical attention immediately.

Other symptoms of low blood pressure associated with fever include: fatigue, confusion, nausea, rapid shallow breathing, chest pain, cold or clammy skin, and a weak pulse. In severe cases it can cause loss of consciousness.

It is important to monitor your child’s temperature, heart rate, and blood pressure regularly when they have a fever. If you notice any of the above symptoms associated with low blood pressure, contact your doctor immediately for further evaluation and treatment.

Diagnosis and Treatment for Low Blood Pressure Caused by Fever

If you or your child has low blood pressure and a fever, it’s important to see a doctor to determine the cause. Low blood pressure caused by fever is usually not serious and can be treated with rest and fluids. However, if the low blood pressure is accompanied by other symptoms, such as shortness of breath, chest pain, or fainting, it may be indicative of a more serious condition and requires immediate medical attention.

The first step in diagnosing and treating low blood pressure caused by fever is to take a complete medical history. This includes information about any recent illnesses, medications, allergies, surgeries, and lifestyle factors. The doctor will also perform a physical examination to check vital signs such as heart rate and temperature. Blood tests may be ordered to look for infections or other underlying causes of the low blood pressure.

Treatment for low blood pressure caused by fever usually consists of rest, hydration, and in some cases medication. One common medication used to treat this condition is fludrocortisone acetate (Florinef), which helps retain salt in your body and increase blood volume. In severe cases, intravenous fluids may be given to help increase blood pressure quickly.

It’s important to follow your doctor’s instructions for managing low blood pressure caused by fever and talk with them about any concerns or questions you have about your condition.

Prevention Tips for Avoiding Lower Blood Pressure Due to Fever

When it comes to your blood pressure, a fever can be both good and bad. A low-grade fever that lasts for a few days can actually help improve your body’s overall immune response. However, a high fever can have the opposite effect and cause a significant drop in your blood pressure.

There are a few things you can do to prevent this from happening:

  1. Drink lots of fluids. This will help keep your body hydrated and prevent your blood pressure from dropping too low.
  2. Avoid strenuous activity. If you have a fever, it’s important to rest and avoid any strenuous activity. This will help prevent your blood pressure from dropping too low.
  3. Monitor your temperature regularly. Keep an eye on your temperature and if it starts to rise, take steps to bring it down (drinking fluids, resting, etc.). This will help prevent your blood pressure from dropping too low.
  4. Consult your doctor. If you have a fever and your blood pressure is dropping, it’s important to consult your doctor right away. They may be able to provide additional guidance and treatment.

By following these tips, you can help prevent a drop in your blood pressure due to fever.


In conclusion, fever can indeed cause low blood pressure in children and adults. This phenomenon is known as Fever-induced Hypotension (FIH). It is important to monitor your child’s or your own temperature if you are experiencing any symptoms of FIH and consult a doctor for more information. With the proper diagnosis and treatment, this condition can be managed properly.

Sharing Is Caring:

Leave a Reply