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

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   May 7, 2022 · The average temperature has traditionally been defined as 98.6 F (37 C). A temperature taken using a mouth thermometer (oral temperature) that's 100 F (37.8 C) or higher is generally considered to be a fever. Depending on what's causing a fever, other fever signs and symptoms may include: Sweating. Chills and shivering.

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.healthline.com › health › cold-fluFever in Adults: Characteristics, Types, and When It's Serious

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   Sep 17, 2019 · Serious symptoms. A fever may be a sign of serious illness if you have: a severe headache; dizziness; sensitivity to bright light; stiff neck or neck pain; skin rash; difficulty breathing ...

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. my.clevelandclinic.org › health › symptomsFever Symptoms & Causes: What Is Considered a Fever?

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   If you have a fever along with any of the following symptoms, go to your nearest emergency room or call 911. It may be a sign of a serious or life-threatening illness. Pain or tenderness in your belly (abdomen).

6. activebeat.com › your-health › fever-in-adults-whenFever in Adults: When to Worry, Symptoms, and Causes - ActiveBeat

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   Jun 1, 2021 · Symptom: Elevated Temperature. The most common symptom of a fever is an elevated temperature. As we mentioned above, a temperature of 100.4-degrees Fahrenheit (38-degrees Celsius) is considered a fever. The increased temperature can make you feel hot.

7. People also ask

   Why is a fever a symptom of an illness?

   • A fever is a symptom of numerous illnesses that are characterized by an elevated body temperature. The increased body temperature is one of the ways our body’s immune system activates to fight the illness. Perhaps by having a better understanding of fevers we can learn how to appreciate our body’s immune system.

   Fever in Adults: When to Worry, Symptoms, and Causes

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   Does running around make a fever worse?

   • Running around will not only make you feel worse but if your fever is from a contagious infection you are likely to pass that on to others as well. It’s the morning and you wake up feeling warm, tired, and your body just aches. You have a fever and now the symptoms are in full swing.

   Fever in Adults: When to Worry, Symptoms, and Causes

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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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   Is a fever a sign of a serious illness?

   • In adults a fever is not usually serious or life-threatening. However, sometimes a fever in adults can be a warning signal that something is not right. A high or persistent fever might be a sign of a serious health condition. What is a fever? A fever is normally a short-term rise in temperature that helps your body get rid of illness.

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

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

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   Is fatigue a symptom of a fever?

   • Fatigue with a fever is a very real symptom and one that you probably shouldn’t ignore. Your body is in overdrive when its temperature is elevated causing you to feel fatigued. Take time to rest when you are tired with a fever. Sleep and rest will help you restore and heal.

   Fever in Adults: When to Worry, Symptoms, and Causes

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8. www.merckmanuals.com › fever-in-adultsFever in Adults - Fever in Adults - The Merck Manuals

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   Fever is an elevated body temperature that occurs when the body's thermostat (located in the hypothalamus in the brain) 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.