What is meaning of Run a fever?

The phrase "run a fever" means to have an elevated body temperature as a result of an illness or infection. Fever is a common symptom of many medical conditions, and it occurs when the body's thermostat (hypothalamus) raises the body's temperature in response to an infection or illness. It's a natural defense mechanism that helps fight off infections and promote healing.

When you run a fever, your body temperature rises above the normal range, which is typically between 97.6°F (36.5°C) and 99.6°F (37.5°C). Fevers can vary in severity, and the degree of elevation in body temperature can range from mild (100.4°F to 102.2°F or 38°C to 39°C) to high (above 102.2°F or 39°C).

When you run a fever, you may experience various symptoms, including:

- Increased body temperature

- Chills and shivering

- Sweating

- Weakness and fatigue

- Muscle aches and pains

- Headache

- Loss of appetite

- Dehydration

- Irritability

- Difficulty sleeping

Running a fever can be an indication of an underlying medical condition, and it's important to seek medical attention if the fever is severe or persists for more than a few days. Treatment typically involves managing the symptoms, staying hydrated, and addressing the underlying cause of the fever.