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

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   May 31, 2023 · 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.

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

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   May 7, 2022 · Call your health care provider if your temperature is 103 F (39.4 C) or higher. Seek immediate medical attention if any of these signs or symptoms accompanies a fever: Severe headache; Rash; Unusual sensitivity to bright light; Stiff neck and pain when you bend your head forward; Mental confusion, strange behavior or altered speech; Persistent ...

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

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   May 22, 2023 · When to worry about fever. If you have a fever over 104°F (40°C), you should call your doctor. Seek medical help right away if you have a fever along with any of these symptoms: seizure; loss of consciousness; confusion; stiff neck; trouble breathing; severe pain anywhere in the body; swelling or inflammation of any part of the body

   • Email: hhp_info@health.harvard.edu

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

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   Jun 20, 2024 · A fever is when your body temperature is higher than usual, often due to an infection or illness. Doctors generally consider a fever to be an oral temperature of 100 F (37.8 C) or higher.

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

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   Sep 17, 2019 · A fever is usually a sign that your immune system is busy fighting an infection or other illness. In babies and toddlers even a slight fever may be a sign of a serious illness. In adults a fever...

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. People also ask

   Is a fever an illness?

   • Last reviewed on 05/31/2023. Learn more about the Health Library and our editorial process. A fever is when your body temperature rises higher than normal. A fever itself isn’t an illness. Rather, it’s a symptom for a wide range of health conditions.

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

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   What is a fever a sign of?

   • What Is a Fever? A fever is a sure sign your body is fighting off some type of infection. (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.

   Fever: Causes, Symptoms, and Treatment - WebMD

   www.webmd.com/first-aid/fevers-causes-symptoms-treatments

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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 & causes - Mayo Clinic

   www.mayoclinic.org/diseases-conditions/fever/symptoms-causes/syc-20352759

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   Why do I have other symptoms if I have a fever?

   • When you have other symptoms with fever, it’s usually because of the condition causing it. Other symptoms you might have when you have a fever include: If you're an older adult, serious infections tend to cause symptoms such as confusion or weight loss rather than fever.

   Fever Symptoms & Causes: What Is Considered a Fever? - WebMD

   www.webmd.com/covid/what-is-a-fever

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   Can you get sick if you have a fever?

   • Better thermometers. We may have more accurate thermometers than people did a century ago. Despite the new research, doctors generally don’t consider you to have a fever until your temperature is at or above 100 F. But you can be sick if it’s lower than that.

   Fever Symptoms & Causes: What Is Considered a Fever? - WebMD

   www.webmd.com/covid/what-is-a-fever

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8. patient.info › signs-symptoms › feverFever (High Temperature): Causes, Symptoms, and Treatment

   patient.info › signs-symptoms › fever

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   Sep 8, 2024 · Meets Patient’s editorial guidelines. A high temperature is called a fever (or sometimes a high fever). Fever itself is not an illness. A fever is usually a symptom of an underlying condition, usually an infection. In this article: What is a fever? What temperature is a fever? What is a normal temperature? What causes a fever?