Is 40.5 degrees a fever?

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Fever is a common symptom that can be caused by many different reasons, such as infections, inflammations or other diseases. The definition of fever varies slightly, but in general a fever is considered a rise in body temperature above 38 degrees. A high fever can be a sign of a serious condition that requires immediate treatment.

What is fever?

Fever is the body’s natural reaction to infections and other diseases. It is part of the immune system’s defense mechanism, which helps the body fight pathogens. During a fever, the body’s temperature rises, which can help kill bacteria and viruses.

Is 40.5 degrees a fever?

Yes, 40.5 degrees is a very high fever. Such a high temperature can be dangerous and requires immediate medical attention. A high fever can cause serious complications, such as convulsions, dehydration and organ damage, especially in children and the elderly.

Causes of high fever

  • Infections: Bacterial and viral infections are the most common causes of fever. Examples are influenza, pneumonia and urinary tract infections.
  • Inflammations: Inflammatory diseases such as rheumatism and inflammatory bowel disease can also cause fever.
  • Medications: Certain medications can cause fever as a side effect.
  • Autoimmune diseases: Diseases in which the body’s immune system attacks its own tissues can also cause fever.

When to see a doctor?

If you or someone close to you has a fever of 40.5 degrees, it is important to see a doctor immediately. A high fever can be a sign of a serious infection or other illness that requires urgent treatment. You should see a doctor especially in the following situations:

  1. The fever lasts more than 3 days.
  2. The fever is accompanied by other serious symptoms, such as breathing difficulties, chest pain or confusion.
  3. Fever rises above 40 degrees.
  4. The fever is accompanied by a rash, stiff neck or severe headache.

Fever treatment

Treatment for high fever depends on the cause. Common treatments are:

  • Medicines: Antipyretic drugs such as paracetamol and ibuprofen can help lower body temperature.
  • Fluid intake: Drinking enough liquid is important to avoid dehydration.
  • Rest: Adequate rest helps the body recover and fight infection.

You can find more information about fever and its treatment, for example, at Terveyskirjasto and From the Mayo Clinic site.

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