What Is the Range for a Low-Grade Fever?


Quick Answer

The adult range for a low-grade fever is between 100 F to 101 F, according to eMedicineHealth. An intermediate grade fever is 102 F, while fevers ranging from 103 F to 104 F are considered high-grade. Fevers above 104 F are considered dangerous.

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Full Answer

Fever temperatures above 106.7 F are categorized as hyperpyrexia and considered a medical emergency, according to eMedicineHealth. In infants younger than 6 months, fever temperatures of 102 F warrant medical attention. Fevers are usually caused by a response to a viral infection, such as the flu, or inflammation due to tissue injury. In addition, drugs, poison, cancer, brain damage and heat exposure can cause fevers.

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