Pathologic Function
hyperpyrexia
hy·per·py·rex·i·a [ hahy-per-pahy-rek-see-uh ]
Etymology:
Greek hyper = excess + pyressein = to be feverish (from pyretos = fever) + -ia = condition
Definitions related to hyperpyrexia:
  • An extreme elevation of core body temperature above normal defined as a rectal temperature of 41.1 degrees Celsius (106 degrees Fahrenheit).
    Human Phenotype Ontology (HPO)
    The Human Phenotype Ontology Project, 2025
  • Body temperature of 106 degrees Fahrenheit (41.1 degrees Celsius) or higher.
    NCI
    U.S. National Cancer Institute, 2021
  • Extreme elevation of body temperature above normal.
    NICHD Pediatric Terminology
    U.S. National Cancer Institute, 2021
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This content should not be used in place of medically-reviewed decision support reference material or professional medical advice. Some terms may have alternate or updated definitions not reflected in this set. The definitions on this page should not be considered complete or up to date.