Is a body temperature of 39.4°C considered a high fever?

Generally, high fever refers to a high body temperature. A temperature of 39.4 usually means 39.4°C, which is typically considered a high fever. The detailed explanation is as follows:

Under normal circumstances, the human body maintains a dynamic balance between heat production and heat dissipation, with body temperature generally ranging between 36–37°C. Fever is a common physiological phenomenon and also a pathological response. Various factors can lead to increased heat production or reduced heat loss. Medically, a temperature between 37.3–38°C is classified as low-grade fever, 38.1–39°C as moderate fever, and 39.1–41°C as high fever. A body temperature exceeding 41°C is considered hyperpyrexia (extremely high fever). Therefore, a temperature of 39.4°C is categorized as high fever, and medical evaluation—including blood tests—is necessary to determine the underlying cause.

Patients with a body temperature of 39.4°C may experience various discomforts, such as headache, weakness, and even impaired consciousness or seizures. Whole-body wiping with lukewarm water or alcohol can help reduce temperature. Additionally, medications such as ibuprofen sustained-release capsules or acetaminophen tablets should be taken according to medical advice.