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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 · The average body temperature is 98.6° F (37°C). But "normal" body temperature varies from person to person. It also changes during the day, rising a bit after you eat or exercise. 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.

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

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   May 7, 2022 · 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.

3. health.clevelandclinic.org › whats-happening-in-myWhat’s Happening in My Body When I Have a Fever?

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   Mar 5, 2019 · High fever is characteristic of influenza. It’s actually part of the body’s immune response. We tend to think of a fever as something bad that we want to bring down – it’s very ...

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

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   Sep 17, 2019 · Common causes of a fever in adults are: viral infection (like the flu or a cold) bacterial infection. fungal infection. food poisoning. heat exhaustion. serious sunburn. inflammation (from ...

5. 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. For example, an individual who is over 70 years old may have a lower normal ...

6. www.stamfordhealth.org › healthflash-blog › primaryHigh Fever & Temperature In Adults: When To Worry | Stamford ...

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   Nov 29, 2021 · Fever is an elevated body temperature which means your temperature is 100.4 degree F or higher. A fever is the body’s way of fighting an infection by naturally raising your body’s temperature to “kill the germ.”. The medical community likes to say that fever is a “good thing,” in most cases. And yes, it’s completely possible for ...

7. People also ask

   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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   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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   Why is a fever a symptom of an illness?

   • A fever is a symptom of numerous illnesses that are characterized by an elevated body temperature. The increased body temperature is one of the ways our body’s immune system activates to fight the illness. Perhaps by having a better understanding of fevers we can learn how to appreciate our body’s immune system.

   Fever in Adults: When to Worry, Symptoms, and Causes

   activebeat.com/your-health/fever-in-adults-when-to-worry-symptoms-and-causes/

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   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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   What causes a high fever in adults?

   • Viral Infections can commonly cause fevers, and such infections include COVID-19, cold or the flu, airway infection like bronchitis, or the classic stomach bug. That’s why you often hear the word “viral” as an explanation because these types of infections often go away on their own after a few days. What is considered a high fever in adults?

   High Fever & Temperature In Adults: When To Worry - Stamford Health

   www.stamfordhealth.org/healthflash-blog/primary-care/fever-in-adults-when-to-worry/

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   What are the symptoms of a fever?

   • You have a fever and now the symptoms are in full swing. According to Health Grades, “body aches are dull pain or discomfort in part or all of the body.” They can range from mild to feeling like you were hit by a bus. For many people, the aching doesn’t stop in their body, it continues to the head. A headache is another common symptom of a fever.

   Fever in Adults: When to Worry, Symptoms, and Causes

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

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   Jun 1, 2021 · When we have a fever it might seem like our body is fighting against us. But it turns out our body is doing us a favor by inducing the fever. A fever is a symptom of numerous illnesses that are characterized by an elevated body temperature. The increased body temperature is one of the ways our body’s immune system activates to fight the illness.