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A summary of the differences between hyperthermia, hypothermia, and fever. Hyperthermia: Characterized on the left. Normal body temperature (thermoregulatory set-point) is shown in green, while the hyperthermic temperature is shown in red. As can be seen, hyperthermia can be considered an increase above the thermoregulatory set-point.
[1] [7] Hyperthermia is thus not considered fever. [7]: 103 [40] Hyperthermia should not be confused with hyperpyrexia (which is a very high fever). [7]: 102 Clinically, it is important to distinguish between fever and hyperthermia as hyperthermia may quickly lead to death and does not respond to antipyretic medications.
Hyperpyrexia >40.0 or 41.0 °C (104.0 or 105.8 °F) [6] [7] Note: The difference between fever and hyperthermia is the underlying mechanism. Different sources have ...
Hyperpyrexia >40.0 or 41.0 °C (104.0 or 105.8 °F) [22] [23] Note: The difference between fever and hyperthermia is the underlying mechanism. Different sources have ...
Hyperpyrexia >40.0 or 41.0 °C (104.0 or 105.8 °F) [43] [44] Note: The difference between fever and hyperthermia is the underlying mechanism. Different sources have ...
Malignant hyperthermia is diagnosed on clinical grounds, but various laboratory investigations may prove confirmatory. These include a raised creatine kinase level, elevated potassium, increased phosphate (leading to decreased calcium) and—if determined—raised myoglobin; this is the result of damage to muscle cells.
Hyperthermia can set in when the core body temperature rises above 37.5–38.3 °C (99.5–100.9 °F). [3] [4] Humans have adapted to living in climates where hypothermia and hyperthermia were common primarily through culture and technology, such as the use of clothing and shelter. [5]
The average difference between oral and axillary temperatures of Indian children aged 6–12 was found to be only 0.1 °C (standard deviation 0.2 °C), [51] and the mean difference in Maltese children aged 4–14 between oral and axillary temperature was 0.56 °C, while the mean difference between rectal and axillary temperature for children ...