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In humans, hyperthermia is defined as a temperature greater than 37.5–38.3 °C (99.5–100.9 °F), depending on the reference used, that occurs without a change in the body's temperature set point. [3] [10] The normal human body temperature can be as high as 37.7 °C (99.9 °F) in the late afternoon. [2]
Continuous fever is a type or pattern of fever in which temperature does not touch the baseline and remains above normal throughout the day. The variation between maximum and minimum temperature in 24 hours is less than 1°C (1.5°F). [ 1 ]
Although it is unpleasant, fever rarely rises to a dangerous level even if untreated. [105] Damage to the brain generally does not occur until temperatures reach 40.0 °C (104.0 °F), and it is rare for an untreated fever to exceed 40.6 °C (105.1 °F). [106] Treating fever in people with sepsis does not affect outcomes. [107]
An early morning temperature higher than 37.3 °C (99.1 °F) or a late afternoon temperature higher than 37.7 °C (99.9 °F) is normally considered a fever, assuming that the temperature is elevated due to a change in the hypothalamus's setpoint. [15] Lower thresholds are sometimes appropriate for elderly people. [15]
Intermittent fever is a type or pattern of fever in which there is an interval where temperature is elevated for several hours followed by an interval when temperature drops back to normal. [1] This type of fever usually occurs during the course of an infectious disease . [ 2 ]
New research finds the optimal room temperature range for sleeping for older adults. Here, experts explain the best temperature for sleep.
Fever fit, febrile convulsion: An analog medical thermometer showing a temperature of 38.8 °C or 101.8 °F: Specialty: Emergency medicine, neurology: Symptoms: Tonic-clonic seizure [1] Usual onset: Ages of 6 months to 5 years [1] Duration: Typically less than 5 minutes [1] Types: Simple, complex [1] Causes: High body temperature [1] Risk ...
The representation is made on a temperature-relative humidity, instead of a standard psychrometric chart. The comfort zone in blue represents the 90% of acceptability, which means the conditions between -0.5 and +0.5 PMV, or PPD < 10%.