Fever

　　發(fā)熱

　　Fever is a physiologic state in which the body temperature is elevated above the individual’s normal temperature, usually over over 100°F (37.8°C).

　　發(fā)熱是指體溫升高超過個體正常溫度的一種生理狀態(tài)，通常指華氏100度或攝氏37.8度以上。

　　A healthy person's body temperature fluctuates between 97°F (36.1°C) and 100°F (37.8°C), with the average being 98.6°F (37°C). The body maintains stability within this range by balancing the heat produced by the metabolism with the heat lost to the environment. The "thermostat" that controls this process is located in the hypothalamus, a small structure located deep within the brain. The nervous system constantly relays information about the body's temperature to the thermostat, which in turn activates different physical responses designed to cool or warm the body, depending on the circumstances. A fever occurs when the thermostat resets at a higher temperature, primarily in response to an infection. form m.serviciosjt.com

　　健康者體溫波動范圍為97°F (36.1°C)至100°F (37.8°C)，平均98.6°F (37°C)。機體通過自身代謝產生的熱量與環(huán)境消耗熱量之間的平衡來使體溫穩(wěn)定在該范圍內?？刂圃撨^程的“調溫器”位于下丘腦，大腦深處。神經(jīng)系統(tǒng)不斷向這個“調溫器”傳遞機體溫度信息，再由“調溫器”根據(jù)不同情況，激活各種生理反應，冷卻或加熱機體。當“調溫器”設置處于較高端時，就會出現(xiàn)發(fā)熱現(xiàn)象，它主要是對感染所作的一種反應。