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1. • • A fever is when your body temperature rises higher than normal. 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.
     my.clevelandclinic.org/health/symptoms/10880-fever

     Fever Symptoms & Causes: What Is Considered a Fever?

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

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   May 31, 2023 · A fever is when your body temperature is higher than your normal average temp. Most providers say a fever is either 100.0 F (37.8 C) or 100.4 F (38 C). When you have a fever, it’s your body’s normal response to fighting an infection or illness. Fevers usually aren’t a serious concern.

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. 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.

5. www.verywellhealth.com › fever-8685009Fever: Temperature Range, What’s Serious, Breaking It

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   Aug 21, 2024 · Fever is an elevation in the body's temperature. It's not a disease but rather a sign or response to something occurring within the body, most commonly an infection. Noninfectious conditions or scenarios like inflammatory diseases or medication reactions can also cause a fever.

   • Author: Colleen Doherty, MD

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

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   Nov 15, 2023 · A fever can be a sign of several health conditions, which may or may not need medical treatment. The most common causes are infections such as colds and stomach bugs (gastroenteritis)....

7. patient.info › signs-symptoms › feverFever (High Temperature): Causes, Symptoms, and Treatment

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   Sep 8, 2024 · Signs and symptoms. Fever. High temperature. Peer reviewed by Dr Hayley Willacy, FRCGP Last updated by Dr Colin Tidy, MRCGP Last updated 8 Sep 2024. Meets Patient’s editorial guidelines. A high temperature is called a fever (or sometimes a high fever). Fever itself is not an illness.

8. People also ask

   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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   Is fever a symptom of a viral infection?

   • No formal or standard definition exists for fever, as it can vary depending on age, time of day, and where it's measured on the body (e.g., mouth, rectal, ear, underarm, or forehead). Most cases of fever are due to viral infections.

   Fever: Temperature Range, What’s Serious, Breaking It - Verywell Health

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   Is a fever a sign of a chronic illness?

   • An acute fever in people with cancer or a known inflammatory disorder also is most likely to have an infectious cause. In healthy people, an acute fever is unlikely to be the first sign of a chronic illness. A noninfectious cause is more likely to cause fever that lasts a long time or returns. Infections are the most common causes of fever.

   Fever in Adults - Fever in Adults - The Merck Manuals

   www.merckmanuals.com/home/infections/biology-of-infectious-disease/fever-in-adults

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   What causes a fever if you have a cold?

   • This includes colds, flu, gastroenteritis, or ear, skin, throat, or bladder infections. Heat stroke, heat exhaustion, and extreme sunburn can all raise your body temperature in the form of a fever. You should drink plenty of fluids and apply cold washcloths to help alleviate the heat.

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

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

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   An infectious cause is highly likely in adults with a fever that lasts 4 days or less (called an acute fever). An acute fever in people with cancer or a known inflammatory disorder also is most likely to have an infectious cause.