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1. • 100.4° F (38°C) or higher

     • Fever means a body temperature of 100.4° F (38°C) or higher. 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).
     www.health.harvard.edu/diseases-and-conditions/treating-fever-in-adults

     Fever in adults: when to worry - Harvard Health

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

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   May 22, 2023 · Fever means a body temperature of 100.4° F (38°C) or higher. 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 ...

   • Email: hhp_info@health.harvard.edu

3. 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 · A fever is defined as a body temperature above 100.4°F (38°C). The normal oral temperature for a resting, healthy adult is about 98.6°F (37°C). However, what is considered a “normal” body temperature can vary by one degree based on age, race, and other factors.

4. www.drugs.com › medical-answers › temperatureWhat temperature is considered a fever? - Drugs.com

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   Official answer. by Drugs.com. A fever is defined as a body temperature of 38°C (100.4°F) or higher. Normal body temperature is usually 37°C (98.6°F), although it can be about a half degree Celsius higher or lower for some people and that’s normal for them. A fever occurs when your brain sets your body temperature higher than normal.

5. www.nhs.uk › conditions › fever-in-adultsHigh temperature (fever) in adults - NHS

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   Check if you have a high temperature. You may have a high temperature if: your chest or back feel hotter than usual. you have other symptoms, such as shivering (chills), sweating or warm, red skin (this may be harder to see on black or brown skin) a thermometer says your temperature is 38C or above.

6. 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

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

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   Sep 17, 2019 · 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...

8. People also ask

   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 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…

   www.verywellhealth.com/when-is-a-fever-too-high-770347

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   What is a high body temperature?

   • Body temperature is often higher in the afternoon than it is when you wake up in the morning. Fever means a body temperature of 100.4° F (38°C) or higher. While any temperature above your normal temperature range is considered a fever, there are different levels of fever severity:

   Fever in adults: When to worry - Harvard Health

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

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9. www.verywellhealth.com › when-is-a-fever-too-highWhat Causes a High-Grade Fever and When Is It Too High?

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   Mar 7, 2024 · A fever is considered high when the temperature is above 103 F in adults. In young children and others, a high fever may be defined differently.