How many days does fever usually last in viral influenza?
May 10, 2023
Source: Cainiu Health
Dr. Guo Xiheng
Introduction
Viral influenza typically causes fever for three to five days. Viral influenza is an infectious disease caused by viruses such as rhinovirus and adenovirus, and it is contagious. If a patient's immune defense system is weakened, external viruses may enter the body and invade local mucosal cells, triggering an inflammatory response.
Viral influenza typically causes fever lasting three to five days. The detailed explanation is as follows:
Viral influenza is an infectious disease caused by viruses such as rhinovirus and adenovirus, and it is contagious. When a patient's immune defense function declines, external viruses may enter the body and invade local mucosal cells, triggering an inflammatory response. During this period, inflammatory mediators released by cytokines have heat-dissipating effects. Meanwhile, due to viral influence, the body's temperature regulation center may become disrupted, leading to fever. This condition is self-limiting. In younger patients with good physical health, sufficient antibodies are usually produced within about three days, allowing fever to be controlled. However, in older patients or those with weaker immunity, the fever may last longer, typically around five days. Medications such as acetaminophen tablets or ibuprofen tablets may also be used under medical guidance to shorten recovery time.
During the recovery phase, attention should be paid to environmental hygiene, a light diet, and increased fluid intake to accelerate the elimination of inflammatory mediators.
