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20. satır:
'''Ateş''' (veya '''pyrexia''')(Eski Yunanca : πύρεξ(ις), pýrex(is), ve Yunanca πυρετός, pyretós = ateş<!--, or a '''febrile response''', from the [[Latin]] word ''[[febris]]'', meaning fever, and archaically known as '''ague'''-->) [[vücut]] ısısının yükselmesidir.
Vücut sıcaklığı [[hipotalamus]] tarafında kontrol edilmektedir. Ön preoptik ve arka hipotalamustaki nöronlar 2 çeşit sinyal alırlar. Biri ciltteki sıcak / soğuk reseptörlerinden bilgi ileten [[Çevresel sinir sistemi|periferik sinirlerden]], diğeri ise bölgeyi besleyen kanın sıcaklığından bilgi alır. Bu iki tip sinyal, normal sıcaklığı korumak için hipotalamusun termoregülatör merkezi tarafından entegre edilir. Nötr sıcaklık ortamında, insan metabolizma hızı, iç vücut sıcaklığını 36,5–37,5
<!--is a frequent [[medical sign]] that describes an increase in internal [[body temperature]] to levels above normal. Fever is most accurately characterized as a temporary elevation in the body's thermoregulatory set-point, usually by about 1–2 °C.
45. satır:
However, there are many variations in normal body temperature, and this needs to be considered when measuring for fever. The values given are for an otherwise healthy, non-fasting adult, dressed comfortably, indoors, in a room that is kept at a normal room temperature (22.7 to 24.4°C or 73 to 76 °F ) , during the morning, but not shortly after arising from sleep. Furthermore, for oral temperatures, the subject must not have eaten, drunk, or smoked anything in at least the previous fifteen to twenty minutes.
Body temperature normally fluctuates over the day, with the lowest levels around 4 a.m. and the highest around 6 p.m.
There are different locations where temperature can be measured, and these differ in temperature variability. [[Tympanic membrane]] [[thermometer]]s measure radiant heat energy from the tympanic membrane (infrared). These may be very convenient, but may also show more variability.
110. satır:
Most of the time, fever types can not be used to find the underlying cause. However, there are specific fever patterns that may occasionally hint the [[diagnosis]]:
*[[Pel-Ebstein fever]]: A specific kind of fever associated with [[Hodgkin's lymphoma]], being high for one week and low for the next week and so on. However, there is some debate as to whether this pattern truly exists.<ref>{{
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209. satır:
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* Rhoades, R. and Pflanzer, R. Human physiology, third edition, chapter 27 ''Regulation of body temperature'', p. 820 ''Clinical focus: pathogenesis of fever''. ISBN 0-03-005159-2
* Kasper, D.L.; Braunwald, E.; Fauci, A.S.; Hauser, S.L.; Longo, D.L.; Jameson, J.L. ''[[Harrison's Principles of Internal Medicine]]''. New York: McGraw-Hill, 2005. ISBN 0-07-139140-1.
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