A fever is your body’s way of fighting infection.
When a fever gets too high, however, it can be dangerous to thecentral nervous system.
A sustained temperature greater than 107.6 F (41.5 C) can even lead tobrain damage.

Verywell / Jiaqi Zhou
A low-grade fever will usually resolve at home and can be managed with fever-reducing medication.
Fever accompanied by certain other symptoms or high fevers, however, should be evaluated by a healthcare provider.
Fevers are broadly categorized as being low-grade, moderate-grade, high-grade, andhyperpyrexia.

It can occur in people with a severe infection or a brain hemorrhage.
Can a high fever kill you?
Rest and plenty of fluids can help your body fight the underlying infection.
Warning to Parents
Children and teenagers shouldneverbe given aspirin for a fever.
Summary
A fever is one of the ways that the body fights infections.
If a fever reaches 105 F or more, seek immediate emergency care.
A Word From Verywell
Having a high fever can be a serious condition.
Always act promptly when dealing with a high fever to prevent complications.
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Harvard Health Publishing.How high a fever is too high?
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National Institute of Diabetes and Digestive and Kidney Diseases.Symptoms & causes of urinary retention.