Fever is a common symptom in babies, a protective reflex inherent in the body, a response of the body to invading pathogenic bacteria, the child’s fever is also the most distressing to parents. The normal axillary body temperature of children is 36℃-37℃, 37.5℃-38℃ for low fever, 38℃-39℃ for moderate fever, and above 39℃ for high fever. A long time high fever (more than 40 ℃) will only hurt the brain cells Many parents have the misconception that children with fever will burn their brains and should be given fever-reducing drugs immediately, hoping to bring down the temperature in a short time. Parents are naturally distressed when their baby has a fever, but there is no need to make a fuss or take it lightly. If the temperature is quickly brought down before the condition is clarified, it will instead cover up the condition and delay treatment. For example, if you have a fever due to inflammation, your body temperature will return to normal after the inflammation has subsided, but if you just take antipyretic drugs, even if it comes down temporarily, it will rise again soon. Fever itself is not terrible, the key is to find the underlying cause, the right treatment. Unless the fever is above 40°C for a long time, or if you have encephalitis or meningitis, it can lead to brain cell damage and have a negative impact on the central nervous system. Do not use different antipyretic drugs arbitrarily. The following points should be noted when choosing antipyretic drugs: Generally start taking them only when the body temperature is above 38.5℃ (some doctors also recommend above 39℃), and use them at intervals of at least 6 hours, not frequently within a short period of time, and not more than 4 times a day, otherwise there is a risk of overdose and excessive fever reduction. Stop the medication when the body temperature drops. Infants younger than 3 months old are better off using physical cooling methods, drinking more boiled water, wiping the neck, armpits and groin with a warm towel, and not using various antipyretics easily to prevent toxic reactions. (In general, infants younger than 5 months of age rarely have fever; once they do, they should go to the hospital first. Acetaminophen (Benadryl, Tylenol, etc.) and ibuprofen (Merlin, etc.) have a higher clinical safety. Over-the-counter antipyretics and analgesics should generally not be used for more than 3 days. (Acetaminophen is the preferred fever reducer for children.) Drops are less concentrated and less irritating and are suitable for infants up to 1 year of age. children over 2 years of age are best given oral liquid fever reducers. For older children, small cookie-shaped fruit-flavored chewable tablets are available. Aspirin, Anacin, Nimesulide and other antipyretics are more irritating and have greater side effects on the child and are not recommended (they are already banned in many countries for children). Intramuscular or intravenous injections have more adverse effects and are generally not advocated. Fevers of unknown origin should be given high priority. Fevers lasting more than 1 week or even longer, or fevers of unknown origin, should always be examined by a doctor to confirm whether the fever is caused by tuberculosis bacterial infection, immune system diseases or malignant tumors. During fever, metabolism increases, consuming a lot of protein, sugar, fat and vitamins, and losing a lot of water. At this time, children are weak and their gastrointestinal motility slows down, so they should try to reduce their activities and ensure enough rest. After taking antipyretic drugs, drink more hot drinks such as plain water or fruit juice to help sweating. Give nutritious and easy-to-digest light food, and eat more vitamin-rich fruits and vegetables. Parents should also take good care of their children’s skin and change wet clothes and bedding in time. In conclusion, parents do not need to be overly nervous when their child has a high fever, but can take the above-mentioned supportive home care methods and do cooling treatment first. At the same time, pay close attention to the onset of the disease or complications. In case of emergency, such as crying, poor response, high fever that does not go away, combined with unconsciousness, severe vomiting, poor mobility and even convulsions, you should seek medical attention as soon as possible.