Fever, also known as pyrexia, is a temporary increase in body temperature, often due to an illness. It is a natural response to infections, signaling that the body's immune system is active. Fevers usually resolve on their own and can be managed with rest and fluids.

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Pyrexia FAQ


What temperature is considered a fever?

In adults, a fever is generally considered to be a body temperature of 100.4°F (38°C) or higher.

What are the common causes of fever?

Infections such as colds, ear infections, flu, gastrointestinal infections, and other illnesses often cause fever.

When to seek medical help for a fever?

Medical help should be sought if a fever is accompanied by severe headache, stiff neck, sensitivity to light, chest pain, difficulty breathing, abdominal pain, persistent vomiting, or has no clear cause after three days.

How can I bring down a fever?

Rest, drink plenty of fluids, and take fever-reducing medications such as acetaminophen or ibuprofen as directed by a healthcare professional.

Is a fever in children dangerous?

In most cases, fever in children is not dangerous. However, high fever or fever lasting longer than a few days should be evaluated by a healthcare provider.

Can I prevent fever?

Fever is often a symptom of an underlying condition such as infection, and may not be entirely preventable. Good hygiene practices and a healthy lifestyle can help reduce the risk of infections.

How does the body's immune system respond to fever?

Fever is an immune response to infections, which helps activate and support the body's defense mechanisms, including the production of white blood cells and antibodies.

Are there any home remedies for fever?

Home remedies for fever include staying hydrated, getting enough rest, taking a lukewarm bath, using cold compresses, and wearing lightweight clothing.

Can fever be a side effect of medications?

Yes, certain medications may cause fever as a side effect. It is important to consult a healthcare professional if you suspect that a medication is causing a fever.

Is it safe to use over-the-counter fever medications?

Over-the-counter fever medications are generally safe when used as directed. It is important to follow dosage instructions and consult a healthcare provider if you have any underlying health conditions.

Can fever be a sign of COVID-19?

Fever is one of the primary symptoms of COVID-19. If you have a fever along with other symptoms such as cough, shortness of breath, or loss of taste or smell, it is important to seek medical advice.

Can fever be an early sign of pregnancy?

Some women may experience a slight increase in body temperature as an early sign of pregnancy, but it is not a reliable indicator on its own.

Is fever always a sign of infection?

While fever is commonly associated with infections, it can also be a sign of other conditions such as inflammatory disorders, certain cancers, and reactions to medications.

Can stress cause a fever?

Stress can activate the body's fight-or-flight response, which may lead to an increase in body temperature. However, fever primarily occurs as a response to infections or other underlying health issues.

Can fever cause brain damage?

In most cases, fever does not cause brain damage. However, extremely high fevers, especially in children, can lead to febrile seizures. It's important to seek medical attention for very high or persistent fevers.

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