How many days does a high fever usually last in children with influenza A?
Disease description:
I have noticed that my child recently developed a sudden high fever, with body temperature rapidly rising above 39°C, accompanied by symptoms such as coughing and sore throat. I suspect my child may have been infected with the influenza A virus. I would like to know, how many days does a high fever generally last in children with influenza A?
Doctor's answer (1)
Dr. Zhou Xiaofeng
High fever refers to a high body temperature. After children are infected with the influenza A virus, high fever may persist for 3 to 7 days.
Typically, children infected with the influenza A virus will experience a sudden onset of high fever, with body temperature rapidly rising above 39°C, which may last for several days. The duration of the fever varies depending on individual differences and the severity of the illness. Generally, influenza-related high fever in children may last for 3 to 7 days.
If the child has a stronger constitution and timely treatment measures are taken, such as taking medications and implementing physical cooling methods, the duration of fever may be relatively shorter, usually about 3 days. However, if the child has a weaker constitution or treatment is delayed, the fever may last longer and, in severe cases, may lead to other complications, such as myocarditis or pneumonia.
During the child's high fever period, it is recommended to closely monitor changes in body temperature and ensure adequate hydration to prevent dehydration. Additionally, fever-reducing medications such as ibuprofen sustained-release capsules, acetaminophen tablets, or cefixime tablets may be administered as directed by a physician to help lower body temperature. Furthermore, the child should be encouraged to rest more and avoid strenuous activities to promote recovery. If symptoms persist or worsen, prompt medical attention should be sought.
