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  1. Is a fever the start or end of an illness? - Torrinomedica

    Aug 18, 2024 · Introduction: Fever is a common physiological phenomenon that often accompanies various illnesses. It is characterized by an elevation in body temperature, typically above 100.4°F …

  2. What Is the Fever? Start or End of Illness? - Liv Hospital

    Conclusion: Fever as a key indicator in the illness timeline Fever is a key sign that our body is fighting off illness or infection. Knowing about fever helps us understand how our body defends itself. This …

  3. Fever - MedlinePlus

    Jul 27, 2025 · A fever is a body temperature that is higher than normal. A normal temperature can vary from person to person, but it is usually around 98.6 °F (37 °C). A fever is not a disease. It is usually a …

  4. Understanding Fever in Flu Season 2025 | URMC Newsroom

    Oct 8, 2025 · Heat stroke or heat exhaustion. If you experience a high fever along with any other symptoms of heat illness, seek medical attention immediately. Bacterial or viral infections. Typically, …

  5. Fever Symptoms & Causes: What Is Considered a Fever? - Cleveland Clinic

    May 31, 2023 · A fever is when your body temperature rises higher than normal. Learn more about fevers including what providers consider a real fever.

  6. Learning About Fever - Kaiser Permanente

    Infections. This is the most common cause of a fever. Examples of infections that can cause a fever include the flu, a kidney infection, or pneumonia. Some medicines. Severe trauma or injury, such as …

  7. What’s considered a fever and when to see a doctor - OSF HealthCare

    Dec 11, 2025 · A fever is your body’s way of telling you that you’re fighting some sort of infection or sickness. Common causes of fevers in adults include a bacterial infection, like strep throat, or viral …

  8. Fever - Infectious Diseases - MSD Manual Professional Edition

    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 …

  9. Fever - Symptoms & causes - Mayo Clinic

    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 …

  10. Fever and Signs of Infection - Together by St. Jude™

    A fever is an increase in body temperature that is often caused by an infection. Learn what to do if your child has a fever or other signs of infection.