Can having a low-grade fever overnight damage the brain?
Mar 29, 2023
Source: Cainiu Health
Dr. Yang Shuwen
Introduction
Low fever refers to a mild increase in body temperature. Whether spending a night with low-grade fever can damage the brain depends on the underlying cause of the fever. If the fever is caused by bacterial encephalitis, viral encephalitis, or meningitis, and is not treated promptly, the body temperature may continue to rise. After a night of fever, intracranial infection could develop, potentially causing damage to brain tissue—this is what people commonly refer to as "brain damage from fever."
Generally, low-grade fever refers to mild fever. Whether a night of low fever can damage the brain depends on the underlying cause of the fever. The specific analysis is as follows:
1. Yes
If the fever is caused by bacterial encephalitis, viral encephalitis, or meningitis, and is not treated promptly, the body temperature may continue to rise. After a night of fever, intracranial infection could develop, potentially causing damage to brain tissue.
2. No
If the fever is simply due to a common cold, it will not impair brain function. Low-grade fever following a common cold generally does not lead to brain damage.
Patients with low-grade fever should ensure adequate rest and sleep to support recovery, drink plenty of water to prevent dehydration, and maintain a comfortable indoor temperature. Under medical guidance, medications such as acetaminophen tablets or ibuprofen sustained-release capsules may be taken. If the low-grade fever persists for an extended period or is accompanied by other symptoms, prompt medical attention is recommended to identify the cause and receive appropriate treatment. In daily life, drinking sufficient water to promote excretion and getting enough rest are also important.
