It is normal for influenza to cause recurring fever for several days.
Feb 11, 2025
Source: Cainiu Health
Dr. Ren Yi
Introduction
Influenza usually refers to the flu, and fever refers to an elevated body temperature. Generally, it is normal for influenza patients to experience recurring fever for 3 to 5 days, although the exact duration may vary from person to person. If a patient's fever persists for an extended period, timely medical attention is recommended. During the fever, physical cooling methods can be employed, such as warm water sponge baths and fever patches. Additionally, maintaining adequate sleep is advised.
Flu usually refers to influenza, and fever indicates an elevated body temperature. Generally, it is normal for influenza to cause recurring fever for 3 to 5 days, although the exact duration may vary among individuals. If a patient experiences prolonged fever, timely medical attention is advised. The analysis is as follows:
Healthy adults infected with the influenza A virus may experience a rapid increase in body temperature to 39°C after onset, accompanied by symptoms such as headache, fatigue, and muscle pain. If medications such as paracetamol tablets, oseltamivir phosphate capsules, or baloxavir marboxil tablets are taken as directed by a physician, recurring fever lasting 3 days is generally considered normal.
Children may experience fever for a longer duration than adults following influenza infection, because their immune systems are not yet fully developed and their ability to clear the virus is relatively weaker. Children infected with influenza may experience recurring fever for up to 5 days, gradually returning to normal after active fever-reducing treatments.
During the febrile period, physical cooling measures can be taken, such as warm water sponge baths and fever patches. Additionally, sufficient sleep and appropriate rest are recommended to aid in recovery.
