Is a body temperature of 37°C considered a low-grade fever?

Under normal circumstances, an adult’s axillary (underarm) temperature ranges from 36.0°C to 37.0°C. However, body temperature varies depending on factors such as age, time of day (circadian rhythm), and sex. So—is a body temperature of 37°C considered low-grade fever? Below is an overview.

Is a temperature of 37°C considered low-grade fever?

Generally speaking, a temperature of 37°C is not classified as low-grade fever. In adults, the normal oral (sublingual) temperature typically ranges from 36.3°C to 37.2°C; axillary temperature ranges from 36.0°C to 37.0°C; and rectal temperature ranges from 36.6°C to 37.6°C. Therefore, a temperature of 37°C falls within the normal range. However, if an individual’s baseline (usual) body temperature is consistently lower, 37°C may be considered low-grade fever for that person.

At what temperature is fever diagnosed?

In adults, normal physiological body temperature is generally 36.3°C–37.2°C orally, and 36.0°C–37.0°C axillary. Fever is defined as an oral temperature exceeding 37.6°C or an axillary temperature exceeding 37.3°C. Temperatures between 37.3°C and 38.0°C indicate mild fever; 38.0°C–39.0°C, moderate fever; 39.0°C–41.0°C, high fever; and above 41.0°C, hyperpyrexia. Mild fever can often be managed with physical cooling measures. For moderate-to-high fever, oral antipyretics are recommended, combined with physical cooling methods—or prompt medical evaluation at a healthcare facility.

How to manage low-grade fever

When experiencing low-grade fever, prioritize bed rest in a quiet, comfortably temperature-controlled, and well-ventilated environment. If excessive sweating occurs, promptly change into clean, dry clothing and gently wipe the body with lukewarm water. When temperature rises to 38.5°C or higher, antipyretic medication may be used to reduce fever. Always follow the dosage instructions provided by a physician when taking antipyretics.

The above provides an overview addressing the question: “Is a temperature of 37°C considered low-grade fever?” Generally, 37°C is within the normal range—but for individuals whose baseline temperature is consistently lower, 37°C may constitute low-grade fever. We hope this information is helpful to you.