There is a thermoregulatory center in the inferior colliculus of the human brain, where a body temperature locus is set, and the body temperature is set at around 37℃ when the body is not sick. When the human body reacts with inflammation due to various diseases such as infection, some small molecules made by the inflammation will act on the thermoregulation center and make the temperature locus rise, so the human body will carry out a lot of physiological reactions and make the body temperature rise. This causes fever. The above may be too professional, to put it simply, fever is the human body’s defense system and foreign invasion of pathogenic combat results, fever is not a disease, just a manifestation of a lot of diseases can be fever, the higher the fever, indicating that the human body’s ability to resist the stronger, but does not mean that the disease is more serious. Some parents children with a high fever think it is a very big problem, unusually nervous, it is a mess, I do not know that the fever is not more should be feared, some seriously ill baby because the immune system is too low, there is no ability to resist, and even the fever will not be burned. Infants and young children under three months of age, because the immune function is not yet mature, resistance is not strong, even if there is a serious pneumonia, but also rarely high fever. A common example of high fever is toddler emergency rash, a disease that most often occurs in infants aged 6-9 months, with a temperature usually above 39 degrees and a high fever for three days. However, the child’s spirit is usually very good, the subsidence of the body temperature in 72 hours, the appearance of a red rash on the face and trunk, 2-3 days the rash disappears cured, almost no sequelae. Although the baby will have a very high fever for 3 days, but it does not mean that the disease is very serious, only need to reduce the fever appropriately, basically no big deal. At the same time fever is also a self-protection mechanism, fever can effectively inhibit the growth and reproduction of pathogenic bacteria, reduce the damage to the human body. Most of the pathogenic microorganisms optimal growth temperature is 37 degrees, the temperature increases, the pathogen reproduction ability will be significantly reduced. Don’t rush to reduce your body temperature to normal! If this is the case, so many benefits of fever, then there is no need to reduce the fever, let it burn how good ah, but high fever also has its bad side, can cause metabolic disorders of the body and the function of various systems disorders, resulting in damage to vital organs. Due to the imperfect development of the nervous system of children, especially children under 5 years of age are prone to convulsions during fever, which can cause different degrees of damage to the brain. Therefore, pediatric fever, especially high fever, should be treated promptly, while fever below 38.5 ℃ can not be treated so actively.