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1. • • 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. It's usually a sign your immune system is working to fight some type of infection.
     www.webmd.com/first-aid/fevers-causes-symptoms-treatments

     Fever: Causes, Symptoms, and Treatment - WebMD

2. 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

3. www.mayoclinic.org › diseases-conditions › feverFever - Symptoms and causes - Mayo Clinic

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   May 7, 2022 · 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.

4. www.buoyhealth.com › learn › fever10 Reasons You Have a Fever - Buoy Health

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   • Mononucleosis. Symptoms. Fever. Sore throat. Fatigue. Swollen lymph nodes. Mononucleosis, or mono, is a highly contagious viral infection typically caused by the Epstein-Barr virus.
   • Influenza (flu) Symptoms: Fever. Cough. Congestion. Headache. Body aches. Nausea, vomiting, diarrhea (especially in young children) The flu is an infection of the respiratory tract (e.g.,your lungs, nose, and mouth) caused by the influenza virus.
   • Pneumonia. Symptoms. Fever. Cough (which may also produce mucus/phlegm) Trouble breathing or increased breathing rate. Fatigue. Chest pain. Nausea, vomiting, loss of appetite, and diarrhea (especially in younger children)
   • Common cold. Symptoms. Runny nose. Cough and congestion. Low fever. Fatigue. Body aches (usually mild) A common cold is a viral infection of the respiratory tract (usually just your nose and mouth).

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...

6. health.clevelandclinic.org › whats-happening-in-myWhat’s Happening in My Body When I Have a Fever?

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   Mar 5, 2019 · A fever of 101 degrees or higher is commonly associated with the flu. It’s uncomfortable, but it’s actually part of the body’s immune response. Fluids and anti-inflammatory medicines can help you stay comfortable.

7. health.clevelandclinic.org › breaking-a-fever5 Methods to Safely Break a Fever - Cleveland Clinic Health ...

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   Oct 14, 2022 · Do you have to wait for a fever to “run its course”? Or can you do anything to break it faster? Whether you’re checking your child’s temperature and you’re concerned about their fever, or you’ve got a fever of your own, Neha Vyas, MD, family medicine physician, explains how to break a fever and get you feeling better in no time.

8. People also ask

   What does it mean if you have a fever?

   • 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.

   10 Reasons You Have a Fever - Buoy Health

   www.buoyhealth.com/learn/fever

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   What happens if you have a high fever?

   • A very high fever can cause confusion, extreme sleepiness, irritability, and seizures. To help determine why you have a fever, your doctor will ask you about: recent travel, particularly travel abroad. By itself, fever is usually harmless, though a high fever can be miserable.

   Fever in adults: When to worry - Harvard Health

   www.health.harvard.edu/diseases-and-conditions/treating-fever-in-adults

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   Why do you get a fever if you have a high temperature?

   • It is part of your body's defense against infection-causing germs. You get a fever most often when your body is trying to kill infectious invaders such as viruses or bacteria. A higher body temperature helps the immune system respond more vigorously to the attack, and makes it harder for these microbes to survive.

   Fever in adults: When to worry - Harvard Health

   www.health.harvard.edu/diseases-and-conditions/treating-fever-in-adults

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   How does a fever start?

   • A fever begins when your immune system makes more white blood cells to fight an infection. The increase in white blood cells triggers your brain to heat your body up. This causes a fever. In response, your body tries to cool itself off by tightening up on blood flow to your skin and contracting muscles.

   Fever in Adults: Characteristics, Types, and When It's Serious - Healthline

   www.healthline.com/health/cold-flu/fever-in-adults

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9. www.webmd.com › first-aid › fevers-causes-symptomsFever: Causes, Symptoms, and Treatment - WebMD

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   Nov 15, 2023 · 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...