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1. • • People who experience an internal temperature of 104°F (40°C) and higher for prolonged periods can develop hyperthermia. For this reason, it is essential to try to keep a fever from becoming too high.
     www.medicalnewstoday.com/articles/fever-in-adults

     Fever in adults: Symptoms, treatment, and when to seek help

2. 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).

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3. www.verywellhealth.com › when-is-a-fever-too-highWhen Is a Fever Too High? - Verywell Health

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   Mar 7, 2024 · This article will explain what fevers are and how to know when a fever is too high. It will also describe how fever is treated and when it's time to seek emergency medical care.

4. www.health.harvard.edu › staying-healthy › how-highHow high a fever is too high? - Harvard Health

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   Jan 1, 2023 · People should call a doctor if their fever reaches 103° F and go to an emergency room if it reaches 105°. A fever is the immune system's response to an infection or invader. Most fevers drop after people take over-the-counter medications.

   • Author: Toni Golen, MD
   • Phone: (877) 649-9457

   • Location: 4 Blackfan Circle, 4th Floor, Boston, 02115, MA
   • Email: hhp_info@health.harvard.edu

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

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   Aug 21, 2024 · A high fever indicates a body temperature that is possibly serious or dangerous. 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.

   • Author: Colleen Doherty, MD

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

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   Sep 17, 2019 · 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. A persistent or recurrent fever may last or...

7. share.upmc.com › 2016 › 10When Is a Fever Dangerous? | UPMC HealthBeat

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   Oct 7, 2016 · In fact, sometimes a fever can be a good thing: It’s often a sign that your body is fighting an infection or illness. But how do you know when a fever is dangerous? When is it time to see a doctor for a high temperature? What Is a Fever? A fever is a higher-than-normal body temperature.

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   Can a fever be too high?

   • Febrile seizures can occur in babies and young children with temperatures greater than 100.4 F. A sustained temperature greater than 107.6 F can even lead to brain damage. This article will explain what fevers are and how to know when a fever is too high. It will also describe how fever is treated and when it's time to seek emergency medical care.

   What Causes a High-Grade Fever and When Is It Too High? - Verywell H…

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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

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   Can a high fever make you feel better?

   • By itself, fever is usually harmless, though a high fever can be miserable. These steps may help you feel better: Drink plenty of fluids to help cool your body and prevent dehydration. Eat light foods that are easy to digest. Get plenty of rest.

   Fever in adults: When to worry - Harvard Health

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

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   What causes a high fever?

   • A high fever can also be caused by drug reactions, inflammatory diseases, autoimmune disorders, excess heat exposure, and other non-infectious conditions. These conditions cause fever by disrupting the part of the brain that functions as the body's thermostat, called the hypothalamus.

   What Causes a High-Grade Fever and When Is It Too High? - Verywell H…

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   Does fever get worse as temperature rises?

   • The symptoms of fever get worse as the temperature rises. Fevers are broadly categorized as being low-grade, moderate-grade, high-grade, and hyperpyrexia. A low-grade fever is defined as an oral temperature of 99.1 to 100.4 F (37.3 to 38 C) in adults.

   What Causes a High-Grade Fever and When Is It Too High? - Verywell H…

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9. 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 · In fact, most healthy adults can even tolerate a fever as high as 103°F to 104°F for short periods of time without having any significant problems. The body temperature usually returns to normal once the illness resolves. Click here for a list of fever symptoms in adults.