Winter is the high season for children with fever, how to do with baby fever? This dilemma must be what many parents want to know, so today we will answer it for you. The causes of recurrent fever in children 1, non-infectious fever: not caused by various infectious diseases, sterile substances or various inflammatory effects on the thermoregulatory center, dysfunction of the temperature center or various causes of excessive heat production, heat dissipation reduction, resulting in an increase in body temperature above the normal range of circumstances. 2.Unexplained fever: The concept of unexplained fever in a broad sense refers to all those with unexplained fever. However, the narrow concept of fever is also used in clinical practice, that is, fever of unknown origin. The fever lasts for more than 3 weeks, the body temperature is above 38.5℃, and the diagnosis is still not clear after detailed medical history, physical examination and routine laboratory tests. 3.Central fever: It refers to the fever caused by the abnormalities of the thermoregulatory center due to the central nervous system lesion. Before diagnosis, systemic or local inflammatory fever should be strictly excluded, and other causes of fever should be excluded. Intracranial diseases with fever are most often critical cases, and most of them are due to intracranial inflammation, pulmonary infection, and urinary tract infection. In the case of unexplained moderate temperature increase, if the source or cause of the infection cannot be identified at the time, it should not be easily considered as central fever. The cause of systemic or localized infection should be repeatedly searched to exclude it, and attention should be paid to the presence of drug fever and other causes of fever. 4, persistent fever: When the oral temperature is higher than 37.3℃ or anal temperature is higher than 37.6℃, and the change between one day is more than 1.2℃, it is called fever. According to the level of fever, the following clinical gradations can be distinguished: low fever 37.4℃～38℃ moderate fever 38.1℃～39℃ high fever 39.1℃～41℃ super high fever 41℃ or more, lasting for more than 4 weeks, is persistent fever. Ways to reduce fever at home 1. Air circulation If you have air conditioning at home, maintain the room temperature between 25-27℃. You can put the child in a cool room or blow around with an electric fan to make the body temperature drop slowly, so the child will also feel more comfortable. However, if his limbs are cold and shivering, it means he needs warmth, so he should be covered with a blanket. 2, less clothing If the baby’s limbs and hands and feet are warm and the whole body is sweating, it means that it needs to dissipate heat, so you can wear less clothing. 3.Warm water rubbing Unwrap the baby’s clothes and rub the whole body with a warm water (37℃) towel, which can make the baby’s skin blood vessels expand to dissipate body heat, and also absorb body heat when water vapor evaporates from the body surface. 4.Ice pillow helps to dissipate heat, but it is not recommended for small children, because it is not easy for young children to turn their bodies, ice pillow can easily cause local overcooling or hypothermia. The use of fever patches is also possible, as the water in the gel-like substance of the patches vaporizes to carry away the heat and does not cause excessive cooling. So, under what circumstances should you be sent to the hospital for treatment? Determining whether to send to the hospital for treatment Body temperature by itself is not really the most critical way to observe illness in children. For adults, the level of temperature usually reflects the severity of the illness. This is not the case for children because their bodies do not yet have perfect control over temperature. Some children have a fever of 40°C even when they have a mild infection, yet only 38.3°C when they have a more serious illness. When a child has a fever, it is more important for parents to observe his face, demeanor and actions. A child with a temperature of 38.3°C who is pale and quiet and a bit abnormal may be more ill than a child with a temperature of 39.4°C who can still run around the house. If a child with a fever has the following symptoms, regardless of the temperature, a doctor should be consulted for a diagnosis. 1.Crying all the time and no matter who comes to comfort him/her, it is useless. 2.It is difficult to be woken up. 3.If someone tries to touch or move the child, he cries and screams. 4.The neck is stiff and inflexible. 5.Uncontrollable twitching and spasms in the arms, thighs or other parts of the body. 6. Confusion and strange movements (seeing or hearing things that are not there, saying strange things, or acting abnormally). 7.Breathing with a murmur. 8.Inability to swallow any food and drooling uncontrollably. 9.Purple spots appear on the skin. 10.Pale or dark blue complexion. 11.Pulse is weak but fast and urgent (more than 160 beats per minute for children under 1 year old; more than 120 beats per minute for children over 1 year old). 12. Burning or painful sensation when urinating. 13.Blood in the stool when having diarrhea.