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1. • Isn’t an illness

     • A fever itself isn’t an illness. Rather, it’s a symptom of a wide range of health conditions. When your body temperature rises a few degrees above normal, it can be a sign that your immune system has been activated, often to fight an infection. It can also be a side effect of some medications and vaccinations.
     my.clevelandclinic.org/health/symptoms/10880-fever

     Fever Symptoms & Causes: What Is Considered a Fever?

2. 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.

3. www.medicinenet.com › what_are_the_5_types_ofWhat Are the 5 Types of Fever? 6 Causes & Symptoms - MedicineNet

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   5 Types. Symptoms. 6 Causes. When to See the Doctor. Diagnosis. Treatments. Comments. More. What is a fever? The 5 types of fever are intermittent, remittent, continuous or sustained, hectic, and relapsing. A fever is a physiological problem when your body temperature is above the normal range.

4. 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). Nausea or vomiting. Severe headache. Stiff neck. Light irritates your eyes (photophobia). Convulsions or seizures. Difficulty breathing.

5. www.health.harvard.edu › diseases-and-conditionsFever 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

6. www.healthlinkbc.ca › health-topics › fever-orFever or Chills, Age 12 and Older - HealthLink BC

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   With a minor illness, such as a cold, you may have a fever. But a very serious infection may cause little or no fever. It's important to look for and evaluate other symptoms along with the fever.

7. www.webmd.com › ss › slideshow-what-to-know-feverFever Causes, Symptoms and Treatments - WebMD

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   Jul 18, 2024 · 1/12. What a Fever Is. When you have an illness or infection, your body temperature may rise above its normal range. This is a fever. It could help your body fight back against its cause....

8. People also ask

   Is a fever an illness?

   • A fever is not an illness but a symptom or sign of an illness or infection in your body. However, a fever is commonly accompanied by other symptoms including: You might experience sweats or “chills” - feeling cold while shivering. These symptoms might be a sign that you have a fever.

   What Are the 5 Types of Fever? 6 Causes & Symptoms - MedicineNet

   www.medicinenet.com/what_are_the_5_types_of_fever/article.htm

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   Is a fever a sign of a serious infection?

   • 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. For infants, however, even a low fever may mean there's a serious infection.

   Fever - Symptoms and causes - Mayo Clinic

   www.mayoclinic.org/diseases-conditions/fever/symptoms-causes/syc-20352759 

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   What is a fever a sign of?

   • What Is a Fever? A fever is a sure sign your body is fighting off some type of infection. (Photo credit: E+/Getty Images) 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.

   Fever: Causes, Symptoms, and Treatment - WebMD

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

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   When do adults have a fever?

   • Adults usually have a fever when their temperature reaches 100.4 ° F. Learn the warning signs and when to get medical attention.

   Fever in adults: When to worry - Harvard Health

   www.health.harvard.edu/diseases-and-conditions/treating-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 · Adults. 100.4 F (oral temperature) A low-grade fever is when you have a temperature that is slightly higher than normal, usually around 99.5 to 100.3 F. A low-grade fever signals that something...