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What is Internal Fever?

Published in Body Temperature 3 mins read

An "internal fever" describes a sensation of heat within the body, often experienced before a measurable fever develops. It's a subtle feeling of being hot, even when a thermometer might not show an elevated temperature. This experience is closely linked to the body's initial response to an infection.

Understanding Internal Fever

Unlike a typical fever where your body temperature rises above the normal range, an internal fever is more of a subjective experience. It's the body preparing to fight off a threat. According to recent information, an "internal fever" can happen when the body tries to fight off an infection, and can appear before a real fever emerges. It's like a prelude to an actual fever, where the body's defenses are starting to ramp up.

Symptoms of Internal Fever

While not always present, some individuals might feel:

  • A sense of warmth or heat, especially in the chest or abdomen.
  • Chills or shivering, despite not feeling cold to the touch.
  • General discomfort and malaise.
  • Fatigue or tiredness.

Internal Fever & COVID-19

Interestingly, some people infected with COVID-19 may experience an “internal fever” before other symptoms show up. This can sometimes make it difficult to determine if someone is sick early on, as a thermometer reading may be within the normal range.

Comparison: Internal Fever vs. Regular Fever

Feature Internal Fever Regular Fever
Temperature Normal or slightly elevated temperature reading. Elevated temperature reading (above 100.4°F)
Sensation Subjective feeling of being hot internally. Objectively hot to touch.
Timing Can appear before the onset of a regular fever. Appears when the body is actively fighting an infection.
Cause Body's early response to infection. Body's response to illness and infection.

Practical Insights

  • Monitor yourself: If you feel like you have an internal fever, pay attention to other symptoms that might appear.
  • Use a thermometer: Take your temperature regularly, even if you just feel "off" to track if a full fever is developing.
  • Consider rest: If you are feeling unwell, resting is a great first step to help your body recover.
  • Consult a professional: Don't hesitate to contact a healthcare provider if your symptoms persist or worsen.

Internal fever serves as a vital early indicator that your body might be battling something. It is crucial to listen to your body and seek help when needed.

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