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1. • • A fever itself isn’t an illness. Rather, it’s a symptom of a wide range of health conditions. When your body temperature rises a few degrees above normal, it can be a sign that your immune system has been activated, often to fight an infection. It can also be a side effect of some medications and vaccinations.
     my.clevelandclinic.org/health/symptoms/10880-fever

     Fever Symptoms & Causes: What Is Considered a Fever?

2. my.clevelandclinic.org › health › symptomsFever Symptoms & Causes: What Is Considered a Fever?

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   A fever is when your body temperature is higher than your normal average temp. Most providers say a fever is either 100.0 F (37.8 C) or 100.4 F (38 C). When you have a fever, it’s your body’s normal response to fighting an infection or illness. Fevers usually aren’t a serious concern.

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

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   May 22, 2023 · A very high fever can cause confusion, extreme sleepiness, irritability, and seizures. Diagnosing the cause of a fever. To help determine why you have a fever, your doctor will ask you about: other symptoms such as coughing, abdominal pain, vomiting, diarrhea, or pain when urinating; recent surgeries or injuries; recent vaccinations

   • Email: hhp_info@health.harvard.edu

4. www.medicalnewstoday.com › articles › 321889Fever: How it stimulates the immune system - Medical News Today

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   Mar 15, 2022 · Fever: How it stimulates the immune system. Why fever can be your friend in times of illness. Researchers claim that fevers are more than just a symptom of illness or infection. They...

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

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   May 7, 2022 · 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.

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

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   Nov 15, 2023 · Fever Symptoms. A fever is a sign of an illness or infection. When you have one, you may notice these symptoms: Chills or shivering; Sweating; Body aches; Headache; Lethargy (feeling...

7. www.webmd.com › covid › what-is-a-feverFever Symptoms & Causes: What Is Considered a Fever? - WebMD

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   Jun 20, 2024 · When you have an infection or illness, your body releases substances that tell its temperature regulator (located in the brain) to adjust to a higher setting, raising your body temperature. A...

8. People also ask

   What does it mean if you have a fever?

   • A fever is when your body temperature is higher than your normal average temp. Most providers say a fever is either 100.0 F (37.8 C) or 100.4 F (38 C). When you have a fever, it’s your body’s normal response to fighting an infection or illness. Fevers usually aren’t a serious concern. They typically go away when the infection passes.

   Fever Symptoms & Causes: What Is Considered a Fever? - Cleveland Cli…

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   Are fevers a symptom of illness or infection?

   • Researchers claim that fevers are more than just a symptom of illness or infection. They found that elevated body temperature sets in motion a series of mechanisms that regulate our immune system. When we are healthy, our body temperature tends to gravitate around 37°C (98.6°F).

   Fever: How it stimulates the immune system - Medical News Today

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   Why do you get a fever if you have a high temperature?

   • It is part of your body's defense against infection-causing germs. You get a fever most often when your body is trying to kill infectious invaders such as viruses or bacteria. A higher body temperature helps the immune system respond more vigorously to the attack, and makes it harder for these microbes to survive.

   Fever in adults: When to worry - Harvard Health

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

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   Why does a fever make you feel worse?

   • Your body may raise its temperature to help you fight off an infection. When your body is hotter, it makes it harder for viruses or bacteria to survive. 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.

   Fever Causes, Symptoms and Treatments - WebMD

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

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   Jul 18, 2024 · You may have symptoms of the illness that caused the fever, like a cough or sore throat. Food may not sound good. A rotten mood also is possible. Fevers may be a bit more severe for your...