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May 7, 2022 · 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.
A fever has many causes and can be a symptom of almost any illness. Common conditions that cause fever include: Bacterial infections. Viral infections such as influenza or COVID-19. Gastrointestinal (GI) infections. Urinary tract infections. Skin infections. You may also develop a fever due to: A reaction to certain medications. Vaccinations ...
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. An elevated body temperature usually accompanies an underlying condition. Your body increases your temperature to help fight infection or signal a problem from ...
Nov 15, 2023 · A fever is a sign of an illness or infection. When you have one, you may notice these symptoms: Chills or shivering; ... Conditions that cause inflammation, such as rheumatoid arthritis;
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.
- Colleen Doherty, MD
Sep 8, 2024 · Most fevers are caused by infections or other illnesses. Viral infections are the commonest causes of a fever. The high body temperature makes it more difficult for the germs (bacteria or viruses) which cause infections to survive. Fever caused by infections. Common conditions that can cause fevers include:
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Patients who are immunocompromised are predisposed to infection caused by certain microorganisms (see table Some Causes of Acute Fever). Drug fever (with or without rash) is a diagnosis of exclusion, often requiring a trial of stopping the drug. One difficulty is that if antibiotics are the cause, the illness being treated may also cause fever.
