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How to measure temperature of the body and degree of Fever using a Thermometer

It is considered a fever when the temperature in the armpit is above 38ºC, as temperatures between 37.5ºC and 38ºC can be easily reached, especially when it is very hot or when the person has many layers of clothes on, for example.

The safest way to know if you have a fever is to use a thermometer to take your temperature, not relying on just putting your hand on your forehead or the back of your head.

Oftentimes, the high temperature can be reduced in a natural way, removing an item of clothing or taking a bath with warm, almost cold water, for example. However, in cases where the temperature in the armpit is above 39ºC, it is recommended to seek medical attention, as it may be necessary to use medication. 

-How many degrees is fever in the adult

Normal body temperature ranges between 35.4°C and 37.2°C when measured in the armpit, but it can increase in situations of flu or infection, causing fever. The main variations in body temperature include:

-Slightly increased temperature, known as "subfebrile": between 37.5ºC and 38ºC. In these cases, other symptoms usually appear, such as chills, tremors or redness of the face and the first layer of clothing should be removed, taking a bath in warm water or drinking water;

-Fever: is an axillary temperature above 38ºC. In the case of adults, it may be recommended to take a 1000 mg tablet of paracetamol, keep only a layer of clothing or put cold compresses on the forehead. If the temperature does not decrease after 3 hours, go to the emergency room;

-High fever: an axillary temperature above 39.6°C, which should be considered a medical emergency and, therefore, the person should be evaluated by a doctor.

The temperature can also be lower than normal, that is, lower than 35.4°C. This usually happens when the person is exposed to the cold for a long time and is known as "hypothermia". In these cases, one should try to remove the source of the cold and put on several layers of clothing, drink hot tea or heat the house, for example.

-How to reduce fever

Stripping off excess clothing and taking a warm bath is a good way to lower your body temperature, but when that's not enough, your doctor may recommend using an antipyretic, also known as an antipyretic, to lower your fever. The most used remedy in these situations is usually paracetamol, which can be taken up to 3 times a day, at intervals of 6 to 8 hours.

In the case of babies and children, medicines for fever should only be used with the advice of the pediatrician, as dosages vary a lot according to weight and age.

-How to measure temperature correctly

To measure body temperature correctly, it is first important to know how to use each type of thermometer. The most common are:

-Digital thermometer: place the metallic tip in the armpit, anus or mouth in direct contact with the skin or mucous membranes and wait until the beep to check the temperature;

-Glass thermometer: place the tip of the thermometer in the armpit, mouth or anus, in direct contact with the skin or mucous membranes, wait 3 to 5 minutes and then check the temperature;

-Infrared Thermometer: Point the thermometer tip at the forehead or into the ear canal and press the button. After the "beep" the thermometer will show the temperature immediately.

Body temperature should be measured at rest and never immediately after physical activity or after a bath, because in these cases it is normal for the temperature to be higher and, therefore, the value may not be real.

The most common, most practical and safest thermometer to use is the digital thermometer, as it can read the temperature under the armpit and produces an audible signal when it reaches body temperature. 

However, any thermometer is reliable as long as it is used correctly. The only type of thermometer that is contraindicated is the mercury thermometer, as it can cause intoxication if it breaks.

-How to take a baby's temperature

The baby's body temperature should be measured with a thermometer, as in adults, and preference should be given to more comfortable and faster thermometers, such as digital or infrared.

The ideal place to assess the baby's temperature more accurately is the anus and, in these cases, a digital thermometer with a soft tip should be used so as not to hurt the baby. However, if parents are not comfortable, they can use the temperature measurement in the armpit, confirming the anal temperature only in the pediatrician, for example.

(Reference - https://www.cosinuss.com/en/measured-data/vital-signs/body-temperature/)

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