A fever is defined as a temporary rise in body temperature, often due to an underlying illness. The average body temperature is around 98.6°F (37°C), but this can vary slightly from person to person. A reading of 100.4°F (38°C) or higher is generally considered a fever.
When your body detects an invader — like a virus or bacteria — the immune system releases chemicals that raise your internal “thermostat.” This rise in temperature is not random. It helps your body fight off the infection more effectively by slowing down the growth of pathogens and activating immune responses.
Myth 1: Fever Is Dangerous and Must Be Treated Immediately
The truth: Fever is usually not dangerous on its own. It’s a sign that your immune system is doing its job. In most cases, fever helps fight infections and resolves on its own.
Treating every fever aggressively may not be necessary, especially if the person is otherwise feeling okay, drinking fluids, and resting. Overuse of antipyretics (like paracetamol or ibuprofen) may reduce fever but can also mask symptoms.
When your body detects an invader — like a virus or bacteria — the immune system releases chemicals that raise your internal “thermostat.” This rise in temperature is not random. It helps your body fight off the infection more effectively by slowing down the growth of pathogens and activating immune responses.
Myth 2: High Fever Always Means a Serious Illness
The truth: The height of the fever doesn’t necessarily match the severity of the illness. For example:
A simple viral infection (like the flu) can cause a temperature as high as 104°F (40°C).
A serious condition (like sepsis) may cause only a mild fever or none at all in some patients.
What matters more is the overall condition of the person — alertness, hydration, breathing, and presence of other symptoms like rash, confusion, or persistent vomiting.
Myth 3: Antibiotics Are Needed for Every Fever
The truth: Not all fevers require antibiotics. In fact, most fevers are caused by viruses, which do not respond to antibiotics.
Overprescribing antibiotics contributes to antibiotic resistance, one of the biggest global health threats. Antibiotics should only be used when a bacterial infection is diagnosed or strongly suspected by a healthcare provider.