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1. www.mayoclinic.org › diseases-conditions › feverFever - Symptoms and causes - Mayo Clinic

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   May 7, 2022 · A fever is a temporary rise in body temperature. It's one part of an overall response from the body's immune system. A fever is usually caused by an infection. For most children and adults, a fever may be uncomfortable. But it usually isn't a cause for concern. For infants, however, even a low fever may mean there's a serious infection.

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3. www.verywellhealth.com › fever-8685009Fever: Temperature Range, What’s Serious, Breaking It

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   Aug 21, 2024 · In healthy babies younger than 3 months, a fever is a rectal temperature of 100.4 F or greater. In children age 3 months to 36 months, a fever is a rectal temperature between 100.4 F and 102.2 F. In older children and adults, a fever is an oral temperature ranging from 100.0 F to 103.0 F.

   • Author: Colleen Doherty, MD

4. www.healthpages.org › health-a-z › fever-adults100, 101 or 102 Degree Fever? Adult Guide to High Temperatures

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   Aug 4, 2024 · Low-grade fever: temperatures between 99°F (37.2°C) and 100.4°F (38°C) Fever (pyrexia): temperatures between 100.4°F (38°C) and 105.8°F (41°C) Hyperpyrexia: temperatures between 105.8°F (41°C) and 109.4°F (43°C) Temperatures above 109.4°F (43°C) are usually fatal; Symptoms of Fever. Fevers can cause a wide variety symptoms.

5. www.wordhippo.com › what-is › another-word-forWhat is another word for fever - WordHippo

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   Synonyms for fever include feverishness, febricity, febrility, heat, calenture, pyrexia, ague, temp, temperature and shivering. Find more similar words at wordhippo.com!

6. www.webmd.com › ss › slideshow-what-to-know-feverFever Causes, Symptoms and Treatments - WebMD

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   Jul 18, 2024 · The fever also tells your immune system to make more white blood cells to join in the fight. So a fever may help protect you, even if it makes you feel worse for a little while. 7 / 12

7. www.healthline.com › health › cold-fluFever in Adults: Characteristics, Types, and When It's Serious

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   Sep 17, 2019 · A fever in adults is usually not something to worry about, but if the fever is very high or lasts for longer than 3 days, it could be the cause of a more serious illness.

8. People also ask

   What temperature is considered a fever?

   • The average temperature has traditionally been defined as 98.6 F (37 C). A temperature taken using a mouth thermometer (oral temperature) that's 100 F (37.8 C) or higher is generally considered to be a fever. Depending on what's causing a fever, other fever signs and symptoms may include:

   Fever - Symptoms and causes - Mayo Clinic

   www.mayoclinic.org/diseases-conditions/fever/symptoms-causes/syc-20352759 

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   What is a high fever?

   • Again, there is no formal definition, but typically, a high fever is 102.2 F or greater in babies 3 months and older and younger children. A high fever in older children and adults is a temperature of 102.4 F or greater. Fevers above 105.8 F are termed " hyperpyrexia " and can be seen with brain dysfunction, severe infections, or brain bleeds.

   Fever: Temperature Range, What’s Serious, Breaking It - Verywell Health

   www.verywellhealth.com/fever-8685009

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   Is a fever a disease?

   • Fever is an elevation in the body's temperature. It's not a disease but rather a sign or response to something occurring within the body, most commonly an infection. Noninfectious conditions or scenarios like inflammatory diseases or medication reactions can also cause a fever. What Is Considered a Normal Body Temperature?

   Fever: Temperature Range, What’s Serious, Breaking It - Verywell Health

   www.verywellhealth.com/fever-8685009

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   Can a high temperature cause a fever?

   • You may have a fever if your temperature rises above this. Adults typically have a fever if their body temperature increases to 100.4°F (38°C). This is called a low grade fever. A high grade fever happens when your body temperature is 103°F (39.4°C) or above. Most fevers usually go away by themselves after 1 to 3 days.

   Fever in Adults: Characteristics, Types, and When It's Serious - Healthline

   www.healthline.com/health/cold-flu/fever-in-adults

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   When do adults have a fever?

   • Adults usually have a fever when their temperature reaches 100.4 ° F. Learn the warning signs and when to get medical attention.

   Fever in adults: when to worry - Harvard Health

   www.health.harvard.edu/diseases-and-conditions/treating-fever-in-adults

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   Is a fever a sign of a serious infection?

   • A fever is a temporary rise in body temperature. It's one part of an overall response from the body's immune system. A fever is usually caused by an infection. For most children and adults, a fever may be uncomfortable. But it usually isn't a cause for concern. For infants, however, even a low fever may mean there's a serious infection.

   Fever - Symptoms and causes - Mayo Clinic

   www.mayoclinic.org/diseases-conditions/fever/symptoms-causes/syc-20352759 

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9. www.health.harvard.edu › treating-fever-in-adultsFever in adults: when to worry - Harvard Health

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   May 22, 2023 · High fever in adults. While any temperature above your normal temperature range is considered a fever, there are different levels of fever severity: Low-grade: 99.1 to 100.4 F (37.3 to 38.0 C) Moderate-grade: 100.6 to 102.2 F (38.1 to 39.0 C) High-grade: 102.4 to 105.8 F (39.1 to 41 C). When to worry about fever