Relationship between fever and condition: Fever and severity of condition sometimes do not necessarily parallel each other. Infants and young children are more tolerant of high fever, and even if their body temperature is as high as 40°C, they generally do quite well and recover quickly after the fever subsides. On the contrary, frail children and newborns may not have high or even non-increasing body temperature even if the infection is very serious. Older children have a more stable temperature, but a sudden rise in temperature and a poor general condition often reflect the presence of a serious disease. How to think about fever: Fever is a defensive response of the body. Fever increases the activity of phagocytes, antibody production, enzyme activity in white blood cells and detoxification of the liver, which protects the body from disease and promotes recovery. Therefore, if the fever is not too high and the general condition is still good, it should not be treated blindly or hastily to lower the temperature. However, a fever for too long or a high fever that does not subside is harmful to the organism. It can accelerate the metabolism, increase the oxygen consumption, disrupt the fat metabolism and cause ketonemia, cause the destruction of its own protein and cause wasting, dysfunction of cerebral cortex excitation and inhibition, reduce the secretion of digestive juices, reduce the vitality of digestive enzymes, gastrointestinal dysfunction, etc. A series of serious symptoms will occur, aggravate the disease and affect the body’s recovery, so the cause should be identified as soon as possible. Home care of fever Patients with body temperature over 38.5℃ should be promptly and appropriately cooled to prevent convulsions and other adverse consequences. For those with previous history of febrile convulsions or irritability, sedative drugs should be given at the same time of cooling. (A) cooling measures 1, physical cooling Place the child in a quiet, cool, airy environment. Use cold towel or cold water bag, compress the forehead, double armpits and groin and other parts, or use cloth wrapped ice bag (also available soft drinks such as milk into the refrigerator instead of ice) pillow on the head or placed in the above parts. You can also use warm water (28℃～30℃) to rub the limbs, both sides of the trunk and the back. If the child has pale skin or cold skin all over the body during the bath, it should be stopped immediately. Families with conditions, you can also give the child a warm bath, generally about 10 minutes can make the body temperature drop 1 to 2 degrees. 2, drug cooling for immature children, small infants and frail children generally do not use antipyretic cooling. Commonly used antipyretic agents such as acetaminophen, ibuprofen, trade names such as Tylenol, Tianqian, etc. can be used. They can be used repeatedly at intervals of 4-6 hours. (B) Other symptomatic treatment Increases in non-obvious water loss during hyperthermia, coupled with loss of appetite, prompt hydration and feeding the child more water. (C) Etiological treatment Etiological treatment is the key to the treatment of fever. For high fever caused by bacterial infection, effective antibiotic treatment should be selected according to the condition. Local infectious lesions should be removed promptly. For high fever caused by non-infectious diseases, corresponding treatment measures should be taken according to different etiologies. This should be done under the guidance of a doctor. It should be noted that home care is only a symptomatic measure taken by parents to prevent serious complications in the early stages of fever or after a clear diagnosis. It should not be used to delay the child’s treatment. If the child’s condition is more serious, with mental depression, or if the condition worsens with seizures, he or she should also go to the hospital in time to avoid delaying treatment.