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1. • Temporary rise in body temperature

     

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

     Fever - Symptoms & causes - Mayo Clinic

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

3. 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.

4. medical-dictionary.thefreedictionary.com › feverFever | definition of fever by Medical ... - Medical Dictionary

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   A fever is any body temperature elevation over 100 °F (37.8 °C). Description. A healthy person's body temperature fluctuates between 97 °F (36.1 °C) and 100 °F (37.8 °C), with the average being 98.6 °F (37 °C). The body maintains stability within this range by balancing the heat produced by the metabolism with the heat lost to the environment.

5. www.hopkinsmedicine.org › feverFever - Johns Hopkins Medicine

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   What is a fever? A fever is a body temperature that is higher than normal. It usually means there is an abnormal process occurring in the body. Exercise, hot weather, and common childhood immunizations can also make body temperature rise. What causes a fever? A fever is not an illness by itself.

6. www.msdmanuals.com › feverFever - Fever - MSD Manual Professional Edition

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   Key Points. Fever is an elevated body temperature that occurs when the body's thermostat (located in the hypothalamus) resets at a higher temperature, primarily in response to an infection. Elevated body temperature that is not caused by a resetting of the temperature set point is called hyperthermia. Normal body temperature varies by.

   • Author: Larry M. Bush

7. www.health.harvard.edu › a_to_z › fever-a-to-zFever - Harvard Health

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   Apr 3, 2023 · Fever generally can be defined as an early morning temperature higher than 99 degrees Fahrenheit or a temperature higher than 100 degrees Fahrenheit at any time of the day. A part of the brain called the hypothalamus acts as the body's thermostat. When all is well in the body, the hypothalamus is set at the normal body temperature.

8. People also ask

   What does a fever mean?

   • A fever is an increase in body temperature above the normal range. However, body temperature varies between people, with different levels of activity and at different times of the day. Medical textbooks differ in their definition of the highest normal body temperature.

   Fever - Harvard Health

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   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 causes a fever?

   • Fevers are primarily caused by viral or bacterial infections, such as pneumonia or influenza. However, other conditions can induce a fever, including allergic reactions; autoimmune diseases; trauma, such as breaking a bone; cancer; excessive exposure to the sun; intense exercise; hormonal imbalances; certain drugs; and damage to the hypothalamus.

   Fever | definition of fever by Medical dictionary

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   What are the symptoms of a fever?

   • Symptoms are due mainly to the condition causing the fever, although fever itself can cause chills, sweats, and discomfort and make patients feel flushed and warm. Body temperature is determined by the balance between heat production by tissues, particularly the liver and muscles, and heat loss from the periphery.

   Fever - Fever - MSD Manual Professional Edition

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9. medlineplus.gov › ency › articleFever: MedlinePlus Medical Encyclopedia

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   Jul 3, 2022 · Fever is the temporary increase in the body's temperature in response to a disease or illness. A child has a fever when the temperature is at or above one of these levels: 100.4°F (38°C) measured in the bottom (rectally) 99.5°F (37.5°C) measured in the mouth (orally) 99°F (37.2°C) measured under the arm (axillary)