How long does viral fever last in children?

In general, viral fever in children lasts for 3 to 5 days. Details are as follows:

Fever is a common pediatric symptom, with viral infection being the most frequent cause. The duration of fever depends on the type of virus, the site of infection, and whether complications are present. Common viral infections typically affect the gastrointestinal or respiratory tracts—with respiratory infections being more prevalent—and fever usually persists for 3 to 5 days, rarely exceeding 5 days.

If a child’s body temperature becomes excessively high during fever, full-body sponging with lukewarm water may be used for physical cooling to alleviate fever symptoms. However, care must be taken to avoid prolonged exposure, which could lead to chills or hypothermia.

For low-grade fever, antipyretic medication is generally unnecessary. Nevertheless, parents should monitor their child’s temperature regularly using a thermometer after fever onset. If the temperature rises above 38°C (100.4°F), antipyretics may be administered under a physician’s guidance.

During the febrile period, parents should change and wash the child’s close-contact items—such as clothing and bed linens—daily to ensure a comfortable and hygienic environment for recovery.