Why do children often have fever?

When every child is young, parents will be particularly worried that the child will have some diseases that affect the child's healthy growth, especially some children often have some physical changes, such as high fever or low fever, parents will be very worried, why are children prone to fever when they are young? The following editor will explain it to you!

Children often have fever mainly because the nervous system of infants and young children is not yet fully developed, making them prone to high fever or the body temperature rising quickly after taking medicine to reduce the fever.

The human body's hypothalamus has a body temperature regulation center, which functions like the temperature setting of an air conditioner. Under normal circumstances, the temperature set for infants and young children is slightly higher than that for adults. The rectal temperature of infants and young children is about 37.5°C, with a fluctuation of about 1°C.

If the set temperature is raised, for example, if the human body is infected with pathogens, causing the white blood cells to react and produce "thermophores", it will stimulate the temperature regulation center of the hypothalamus. When the set temperature is adjusted to 39°C, the body produces heat through muscle trembling and contraction, or reduces sweating to dissipate heat, raising the body temperature to 39°C.

Children are prone to having a high fever at night. This is because the water content in infants and young children's bodies is higher than that in adults. Even a slight lack of water will affect heat dissipation and make them prone to fever. When children are sick, they have less strength and sleep for a long time. If you don't eat or drink for a long time at night, your body temperature will naturally rise.

The body temperature of infants is easily affected by the external environment: high temperature (heatstroke), wearing too many clothes, insufficient water intake, water loss (sweating, diarrhea), poor ventilation in the room, before and after strenuous exercise, the effects of certain special drugs, and other factors such as preventive injections may also cause fever. If the body temperature becomes unstable, the possibility of illness should be considered.

If it is confirmed that the cause is one of the above factors, parents do not need to worry too much. However, if it is felt that the child is caused by some pathological factors, it is recommended that the child be taken to the hospital for professional examination and treatment in time to avoid delaying the disease, especially if the child is taking some medications, more attention should be paid.