Following his return to France, Birks was hospitalised for five days with pyrexia.
From the en.wikipedia.org
Newland was admitted to the 38th Casualty Clearing Station with pyrexia on 4 December.
From the en.wikipedia.org
A thermometer or a hand to the forehead confirms that we have a fever, or as doctors call it, pyrexia.
From the newscientist.com
Pyrexia is from the Greek pyr meaning fire.
From the en.wikipedia.org
The most common adverse events in pediatric subjects, ages 3 and older, were pyrexia, headache, vomiting, neutropenia, fatigue, anorexia, injection-site erythema, and abdominal pain.
From the forbes.com
More examples
Fever: a rise in the temperature of the body; frequently a symptom of infection
Fever (also known as pyrexia or controlled hyperthermia) is a common medical sign characterized by an elevation of temperature above the normal range of due to an increase in the body temperature regulatory set-point. This increase in set-point triggers increased muscle tone and shivering.
(pyrexic) feverish, pyretic
A fever or a febrile condition, abnormal elevation of the body temperature