Fever, Age 3 and Younger - Topic Overview
It is not unusual for a
preschool-aged child to have 7 to 10 viral infections in a year. Each new viral
infection may cause a fever. It may seem that a fever is ongoing, but if 48
hours pass between fevers, then the new fever is most likely from a new
Common causes of fever include:
Teething does not cause a fever. If a baby is teething and
has a fever, look for other symptoms that may need to be evaluated.
A fever that increases quickly may lead to a
fever seizure in some children. After a fever has
reached a high temperature, the risk of a seizure is less. Fever seizures can
be frightening to see, but they usually do not cause other problems, such as
intellectual disability, or learning problems. If your
child has a high fever and a seizure, see the topic
An abnormally low body temperature (hypothermia) can be serious, even life-threatening. Low body temperature may occur from cold exposure, shock, alcohol or drug use, or certain metabolic disorders, such as diabetes or hypothyroidism. A low body temperature may also be present with an infection, particularly in newborns, older adults, or people who are frail. An overwhelming infection, such as sepsis, may also cause an abnormally low body temperature.
child's symptoms to decide if and when your child should see a doctor.