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Internal Fever: Causes, Symptoms and Treatment

In cases of 'internal fever' you can feel very hot but the thermometer does not show this rise in temperature. The most common is a person who has the same symptoms as a real fever, such as malaise, chills and cold sweat, but the thermometer is still at 36 to 37 ° C, which does not indicate fever.

Although you may complain that your body feels very hot, in fact, the 'internal fever' does not exist, it is just a popular form of expressing a common fever, because the symptoms are the same, but the elevation of the fever is not felt by the palm of your hand, nor is it verified by a thermometer.

Internal Fever: Causes, Symptoms and Treatment

Common symptoms of a fever

In a common fever, in addition to your temperature raising above 37.5ºC, symptoms such as:

  • Sensation of heat;
  • Cold sweats;
  • Chills or chills throughout the day;
  • Malaise;
  • Headache;
  • Tiredness;
  • Lack of energy.

However, in cases of internal fever, although all these symptoms are present, there is no rise in temperature that can be measured.

What can a fever indicate     

Fever is a response of the body in order to fight harmful microorganisms by raising its temperature, being a natural reaction in cases of infections caused by viruses, fungi, bacteria or parasites. So, a fever is not a disease, it is just a symptom that appears associated with many types of diseases and infections.

Fever is only really harmful when it gets above 40 ° C, which can happen quickly, especially in babies and children, and can cause seizures.

A low fever is considered to be up to 38 ° C, it is just considered to be, a rise in temperature, or simply a feverish state, not being very serious, indicating only that you may need to be alert and take off excess clothing to try to cool your body to normal temperature, which is about 36ºC. Fever above 38.5ºC may indicate the need to take a fever-lowering medication, as well as other natural methods to normalize body temperature.

The 'thermostat' that controls body temperature is the hypothalamus, which is very sensitive to any temperature change. It can cause the body to produce more heat, which is dissipated to the middle through the skin, so whenever there is a real rise in temperature, the thermometer is able to indicate. So, it can be concluded that internal fever does not exist.

What to do in case of 'internal fever'

When you think you have an 'internal fever' you should take a warm bath and lie down and rest. Often the cause of this fever sensation is stress and anxiety attacks, which can also cause tremors throughout the body.

It is only indicated to take any fever-lowering medication, such as acetaminophen or ibuprofen, under medical advice and when the thermometer registers at least 38.5 ° C. As in the case of internal fever, the thermometer does not show this temperature, no medication should be taken to try to fight a fever that does not exist. So, if necessary, you should just take off your excess clothes and take a bath with warm water to try to lower body temperature and alleviate discomfort.

If symptoms persist, you should see your doctor for a physical exam to find out what may be happening. In addition to the blood and urine tests, your doctor may also order a chest X-ray, for example to check for any lung changes that may be causing this sensation of fever.

What can cause an internal fever

Emotional causes, such as stress and anxiety crisis, and women's ovulation during your fertile days are the main causes of internal fever. However, you may also find that you have a fever after exercising or some kind of physical exertion, such as carrying heavy bags or climbing a flight of stairs. In this case, the temperature usually returns to normal after a few minutes of rest.

At the onset of a cold or the flu, feeling unwell, tiredness and heaviness in the body are common, and sometimes people refer to a feeling of internal fever. In this case, taking a home remedy such as warm ginger tea may be a good way to feel better.

When to go to the doctor

It is recommended you seek medical help, when in addition to the sensation of internal fever, have other symptoms such as:

  • Sneezing, coughing;
  • Vomiting, diarrhea;
  • Mouth sores;
  • Rapid temperature rise above 39ºC;
  • Fainting or decreased attention span;
  • Bleeding through the nose, anus or vagina, with no apparent explanation.

In this case it is still important to tell the doctor all the symptoms you have, when they appeared, if you changed something in your diet or if you were in another country, for example. If there is pain, it is still advisable to explain where the body site is affected, when it started and if the intensity has been constant.

With this information the doctor may be suspicious of a disease and request tests if necessary, indicating the most appropriate treatment.

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