A fever, also known as pyrexia, is a common physiological response to infection or illness. It occurs when the body’s temperature exceeds the normal range, typically defined as a temperature of 100°F (37.8°C) or higher when measured orally. This increase in body temperature is an essential part of the body’s immune response, helping to fight off pathogens.
While a fever can be alarming, it often serves as a defense mechanism. According to the Mayo Clinic, fevers can be caused by various factors, including infections, inflammation, or even certain medications. In adults, fevers may not always indicate a severe health issue, but specific thresholds warrant concern, particularly in vulnerable populations like infants and toddlers.
When monitoring a fever, it’s crucial to understand how to accurately measure body temperature. Oral and rectal thermometers are generally the most reliable methods for determining core body temperature. If your temperature reaches 103°F (39.4°C) or higher, it’s advisable to consult a healthcare provider.
In many cases, treating a fever involves managing discomfort rather than directly lowering the body temperature. Over-the-counter medications like acetaminophen or ibuprofen can help reduce fever and alleviate associated symptoms. However, it is essential to use these medications as directed and seek medical advice if the fever persists or escalates.
In summary, while a fever is often a natural response to infection, knowing when to seek help is critical. It is recommended to remain vigilant and consult a healthcare provider if unusual symptoms accompany the fever or if it persists beyond a few days. For more detailed information on fever, visit Harvard Health.
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