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1. 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 C).

   • Email: hhp_info@health.harvard.edu

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

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   Sep 17, 2019 · A high or persistent fever might be a sign of a serious health condition. What is a fever? A fever is normally a short-term rise in temperature that helps your body get rid of illness. A...

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 · Adult Guide to High Temperatures. Have a Fever Over 100? Here’s What to Do About Fever in Adults. Last Updated On August 4, 2024 by Leah Alexander, MD, FAAP. 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).

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

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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.

5. activebeat.com › your-health › fever-in-adults-whenFever in Adults: When to Worry, Symptoms, and Causes - ActiveBeat

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   Jun 1, 2021 · Symptom: Elevated Temperature. The most common symptom of a fever is an elevated temperature. As we mentioned above, a temperature of 100.4-degrees Fahrenheit (38-degrees Celsius) is considered a fever. The increased temperature can make you feel hot.

6. www.medicalnewstoday.com › articles › fever-in-adultsFever in adults: Symptoms, treatment, and when to seek help

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   Mar 31, 2020 · When is a fever in adults serious? When to seek help. Normal. Types and causes. Complications. COVID-19. Treatment. Prevention. Summary. Severe illness can cause extremely high temperatures...

7. People also ask

   What is considered a high fever?

   • 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. Almost any infection can cause a high-grade fever, particularly if the body has not been exposed to the pathogen before and has no immunity to it.

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

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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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   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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   What temperature is considered a high-grade fever?

   • Doctors consider a temperature above 104°F (40°C) to be a high-grade fever. As a general rule, adults should consider seeking medical attention if their temperature reaches above 104 °F (40°C). Doctors consider this temperature to be a high-grade fever. However, a fever is not the only symptom a person has when they are ill.

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

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   What does it mean if you have a fever?

   • (Photo credit: E+/Getty Images) A fever is when you have a brief rise in body temperature that’s higher than your normal body temperature. It’s also called a high temperature, hyperthermia, or pyrexia. It's usually a sign your immune system is working to fight some type of infection.

   Fever: Causes, Symptoms, and Treatment - WebMD

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8. www.webmd.com › first-aid › fevers-causes-symptomsFever: Causes, Symptoms, and Treatment - WebMD

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   Nov 15, 2023 · A fever is when you have a brief rise in body temperature that’s higher than your normal body temperature. It’s also called a high temperature, hyperthermia, or pyrexia.