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1. • Yes

     • Yes, contagions like strep throat or the flu, are the most common reason for an elevated temperature, but it’s surely not the only one. More uncommon ailments like brain injury, reactions to legal and illegal drugs, and even cancer can raise your body temperature above its natural level.
     www.popsci.com/fever-causes-infection/

     Does a fever always mean you have an infection? - Popular Science

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

   www.mayoclinic.org › diseases-conditions › fever

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   May 7, 2022 · Fevers below 104 F (40 C) associated with common viral infections, such as the flu, may help the immune system fight disease and are generally not harmful. Fever or elevated body temperature might be caused by: A viral infection; A bacterial infection; Heat exhaustion

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

   www.health.harvard.edu › treating-fever-in-adults

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   May 22, 2023 · 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.

   • Email: hhp_info@health.harvard.edu

4. www.popsci.com › fever-causes-infectionDoes a fever always mean you have an infection? - Popular Science

   www.popsci.com › fever-causes-infection

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   Aug 19, 2017 · By medical standards, a person has a fever if their temperature rises above 38.2 degrees Celsius (100.4 degrees Fahrenheit), although some people may have medically significant fevers below that...

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

   www.verywellhealth.com › fever-8685009

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   Aug 21, 2024 · Fever is a response to something in the body, usually a viral infection like the flu or COVID-19. Bacterial infections, such as urinary tract or skin infections, can also trigger fevers, as can noninfectious causes like autoimmune diseases or drug reactions.

   • Author: Colleen Doherty, MD

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

   my.clevelandclinic.org › health › symptoms

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   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.

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

   www.webmd.com › first-aid › fevers-causes-symptoms

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   Nov 15, 2023 · Adults. 100.4 F (oral temperature) A low-grade fever is when you have a temperature that is slightly higher than normal, usually around 99.5 to 100.3 F. A low-grade fever signals that something...

8. People also ask

   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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   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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   Is fever a symptom of a viral infection?

   • No formal or standard definition exists for fever, as it can vary depending on age, time of day, and where it's measured on the body (e.g., mouth, rectal, ear, underarm, or forehead). Most cases of fever are due to viral infections.

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

   www.verywellhealth.com/fever-8685009

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   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…

   my.clevelandclinic.org/health/symptoms/10880-fever

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9. www.medicalnewstoday.com › articles › 168266Fever: Symptoms, treatments, types, and causes

   www.medicalnewstoday.com › articles › 168266

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   Jan 2, 2024 · A fever is usually a symptom of an infection. It is not usually a cause for concern, but the underlying illness may need medical treatment. Often, a fever will resolve without medical...