Understanding Fever

What Temperature is Considered a Fever and When to be Concerned?

Introduction

Fever is a common symptom that results from the body's immune system response to an infection or illness. While fever can be a sign that the body is fighting a virus or bacteria, it can also be a cause for concern when it reaches certain temperatures. In this article, we will discuss what temperature is considered a fever, the causes of fever, and when to seek medical attention.

What Temperature is Considered a Fever?

The normal temperature for an adult is around 98.6°F (37°C) and can vary slightly depending on the time of day, activity level and menstrual cycle for women. A fever is generally considered to be a body temperature that is higher than 100.4°F (38°C), when taken orally with a thermometer. In infants and young children, however, a fever may occur at a lower temperature. For example, a rectal temperature reading of 100.4°F (38°C) or higher in a newborn may be considered a fever.

Causes of Fever

Fever is a natural response of the body's immune system to fight off infection or illness. When the body detects an infection, it sends signals to the hypothalamus in the brain to raise the temperature of the body in order to kill off the invading virus or bacteria. In addition to infection, other common causes of fever include inflammation, surgery, trauma, medications, and autoimmune diseases.

When to Seek Medical Attention

In most cases, fever is a self-limiting condition and can be managed with rest, fluids and over-the-counter medications such as acetaminophen or ibuprofen. However, there are certain cases when fever can indicate a serious underlying condition and may require medical attention. Seek medical attention if:

- Your fever is higher than 103°F (39.4°C) or lasts longer than three days.

- You experience shortness of breath, chest pain, severe headache, neck stiffness, or confusion.

- You have a weakened immune system due to an underlying condition or medications.

- Your child is under three months of age and has a rectal temperature of 100.4°F (38°C) or higher.

Conclusion

Fever is a natural response of the body's immune system to fight off infection or illness. It is generally considered a fever if the body's temperature is higher than 100.4°F (38°C), when taken orally with a thermometer. While most cases of fever are self-limiting and can be managed with rest, fluids and over-the-counter medications, seek medical attention if your fever is higher than 103°F (39.4°C) or lasts longer than three days, or if you experience other symptoms such as shortness of breath, chest pain, severe headache, neck stiffness or confusion. Remember, it is always better to err on the side of caution and seek medical advice when in doubt.