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

    Apr 3, 2023 · What is it? 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.

    • hhp_info@health.harvard.edu
  2. 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.

  3. Apr 25, 2024 · A fever is a sign that your body is fighting an infection, the flu, COVID-19, or something else. A fever that doesn’t resolve (get better) with a few days of rest, fluids, and over-the-counter medicine requires medical attention.

  4. 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.

  5. Jul 29, 2021 · Feeling Feverish But No Fever: Causes, Treatments, and More. What Does It Mean if You Are Feeling Feverish but Have No Fever? It’s possible to feel feverish but not be running an actual...

    • Kristeen Cherney
  6. 1. Synonym (s): febrile. 2. Having a fever. Farlex Partner Medical Dictionary © Farlex 2012. feverish. (fē′vər-ĭsh) adj. a. Relating to or resembling a fever. b. Having a fever or symptoms characteristic of a fever. c. Causing or tending to cause fever. fe′ver·ish·ly adv. fe′ver·ish·ness n.

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  8. Oct 30, 2023 · Korin Miller. Updated on October 30, 2023. Medically reviewed by. Kashif J. Piracha, MD. The main causes of a fever, also called pyrexia, include illnesses and infections, such as a cold, COVID-19,...