fever

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Introduction References & Edit History Quick Facts & Related Topics

Videos

Why do people get a fever when they're sick?

The difference between viral and bacterial infections

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Timeline of the 1970s

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Holi: Festival of Colors

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fever: Facts & Related Content

Written and fact-checked by The Information Architects of Encyclopaedia Britannica

News •

Reese, Clark to meet in bigger arena when Sky host Fever, with games moved to United Center • Feb. 28, 2025, 4:23 PM ET (AP)

Facts

Also Known As	pyrexia

Videos

Why do people get a fever when they're sick?

The difference between viral and bacterial infections

See All Videos →

Topics

Ebola yellow fever scarlet fever chikungunya fever dengue Zika fever typhoid fever thermometer viral hemorrhagic fever rheumatic fever seizure biomarker itching cough sore throat vital sign lethargy angina pectoris arrhythmia polyuria

Key People

Billroth, Theodor

Theodor Billroth

Austrian surgeon

Quiz

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A Visit with the Word Doctor: Medical Vocabulary Quiz

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3d illustration human heart. Adult Anatomy Aorta Black Blood Vessel Cardiovascular System Coronary Artery Coronary Sinus Front View Glowing Human Artery Human Heart Human Internal Organ Medical X-ray Myocardium

Medical Terms and Pioneers Quiz