Three-year-old baby always has fever at night, normal during the day

Three-year-old baby fever at night but normal during the day, generally due to the presence of bacteria, viruses and other infections in the body, causing the body immune system to react, but during the day due to the child's nerves are too excited, its fever symptoms are inhibited, the performance is not obvious, and the night nerve is in a state of inhibition, at this time will show fever symptoms.