Why does my baby suddenly have a fever

First of all, it is necessary to make it clear that fever is only a symptom. The main cause of fever is that the baby has been infected with acute infection. The most common is respiratory tract infection, and the most common cause of respiratory tract infection is virus. In addition, there are some rare bacteria or mycoplasma infections. These viral bacteria or mycoplasma infections can lead to sudden fever in the baby. When the baby has a fever, it can generally be manifested as a rise in body temperature. If the body temperature rises above 38.5℃, it is necessary to give the baby a timely antipyretic. The antipyretic can choose ibuprofen and acetaminophen. After eating the antipyretic, you can give the baby a proper drink of water, which can promote the decline of body temperature. In addition, when the baby has a fever, pay attention to observe whether the child has other accompanying symptoms. If the temperature is not very high, no more than 38.5℃, you can pay attention to the physical cooling method, which can effectively lower the child's temperature. If the child has a fever, it is better to go to the hospital in time to find out the cause of the child's fever and take corresponding treatment.