What causes a child's face to get hot?

Children's immunity is low, especially now that the weather is hot and cold in spring, which always causes children to catch colds and fevers because they don't keep warm. Many parents occasionally find that their children have fevers, and some children even have red faces. In the following article, the editor will introduce this phenomenon. How should we deal with it in our lives?

Fever is arguably the most common physical sign in babies. According to statistics, children who go to the hospital due to fever generally account for 10% to 15% of children's outpatient visits. It’s no wonder that when seeing the child’s face flushed red and his body burning, even the calmest parents would panic.

Fever is the result of the battle between the human body's defense system and foreign invading pathogens. The higher the fever, the stronger the body's resistance ability, but it does not mean that the disease is more serious. Infants and young children under three months old have not yet fully developed immune functions and weak resistance, so even if they have severe pneumonia, they rarely have a high fever.

A common example of high fever is roseola infantum, which is a disease that occurs frequently in infants aged 6-9 months. The body temperature is usually above 39 degrees and the fever lasts for three days. But the child is generally in good spirits, the temperature subsides within 72 hours, a red rash appears on the face and trunk, and the rash disappears and heals within 2-3 days, with almost no sequelae. At the same time, fever is also a self-protection mechanism. Fever can effectively inhibit the growth and reproduction of pathogens and reduce damage to the human body. The most suitable growth temperature for most pathogenic microorganisms is 37 degrees. When the temperature rises, the reproduction ability of pathogens will be significantly reduced.

The normal basal body temperature of children is 36.9℃~37.5℃. Generally, when the body temperature exceeds the basal body temperature by more than 1°C, it is considered a fever. Among them, low fever refers to body temperature fluctuating around 38°C, and high fever refers to body temperature above 39°C. Continuous fever for more than two weeks is called long-term fever.

The above-mentioned basal body temperature refers to the rectal temperature, which is measured from the anus. Generally, the oral temperature is 0.3℃~0.5℃ lower than the rectal temperature, and the axillary temperature is 0.3℃~0.5℃ lower than the oral temperature.

The article shows that young children may have a fever because they are very active. In many cases, the sun is very strong, or they exercise outside for a long time, which can easily cause their faces to become hot and red. This question asks whether the child has symptoms of a fever.