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  1. Fever - Symptoms and causes - Mayo Clinic

    www.mayoclinic.org/diseases-conditions/fever/...

    A fever is a temporary increase in your body temperature, often due to an illness. Having a fever is a sign that something out of the ordinary is going on in your body. For an adult, a fever may be uncomfortable, but usually isn't a cause for concern unless it reaches 103 F (39.4 C) or higher.

  2. Fever Facts: High Temperature Causes and Treatments

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

    A fever -- also known as a high fever or a high temperature -- is not by itself an illness. It's usually a symptom of an underlying condition, most often an infection. Fever is usually associated...

  3. Fever - Wikipedia

    en.wikipedia.org/wiki/Fever

    Fever, also referred to as pyrexia, is defined as having a temperature above the normal range due to an increase in the body's temperature set point. There is not a single agreed-upon upper limit for normal temperature with sources using values between 37.2 and 38.3 °C (99.0 and 100.9 °F) in humans.

    • Temperature > between 37.5 and 38.3 °C (99.5 and 100.9 °F)
    • Increase in the body's temperature set point
  4. Fever: Symptoms, treatments, types, and causes

    www.medicalnewstoday.com/articles/168266

    May 05, 2020 · A fever is a symptom, not an illness. A doctor may wish to carry out tests to identify the cause. If the fever is due to a bacterial infection, they may prescribe an antibiotic. If it stems from a...

  5. Fever: Causes, Treatment, and Prevention

    www.healthline.com/health/fever

    Fever is also known as hyperthermia, pyrexia, or elevated temperature. It describes a body temperature that’s higher than normal. Fever can affect children and adults. A short-term increase in body...

    • Krista O'connell
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  7. Fever | definition of fever by Medical dictionary

    medical-dictionary.thefreedictionary.com/fever

    Febrile seizure — Convulsions brought on by fever. Malignant hyperthermia — A rare, inherited condition in which a person develops a very high fever when given certain anesthetics or muscle relaxants in preparation for surgery. Meningitis — A potentially fatal inflammation of the thin membrane covering the brain and spinal cord.

  8. Fever: 102 Temperature, Severe, Causes, Treatment, Symptoms ...

    www.medicinenet.com/aches_pain_fever/article.htm

    Fever is the result of your immune system's response to a foreign invader. These foreign invaders include viruses, bacteria, fungi, drugs, or other toxins. These foreign invaders are considered fever-producing substances (called pyrogens), which trigger the body's immune response.

  9. How to Tell If You Have a Fever: Symptoms, Next Steps, and More

    www.healthline.com/health/how-to-tell-if-you...

    Apr 21, 2020 · A fever is the body’s way of battling an illness. Although it’s possible to have one without a known cause, fevers are usually brought on by a virus or bacterial infection. Before you start...

  10. Fever in Adults: High & Low Grade Fever and How to Reduce a Fever

    www.emedicinehealth.com/fever_in_adults/article...

    A fever (also termed pyrexia) is a higher-than-normal body temperature. It is a symptom caused by a wide variety of illnesses. Fevers may occur in anyone at any age; however, this article is specifically addressing fever in adults.