原因和发病机制正常体温一般平衡在37.0°左右,这种平衡的保持是中枢神经系统不断进行调节的结果。若机体产热过多,就通过传导、辐射、对流、水分蒸发等方式,将过多的热量散至体外,以保持体温的平衡。通常在中等气温下(18～28.0℃)和安静时,人体主要是由皮肤幅射、对流和传导散发,其次由皮肤和肺部水分的蒸发散热。当气温超过36.0℃时,辐射、对流散热 Causes and pathogenesis Normal body temperature is generally balanced at about 37.0 °, and the maintenance of this balance is the result of constant regulation by the central nervous system. If the body heat too much, through conduction, radiation, convection, moisture evaporation, etc., will be too much heat scattered to the body in order to maintain body temperature balance. Usually at moderate temperatures (18-28.0 ° C) and quiet, the human body emits mainly radiation, convection and conduction from the skin, followed by the evaporation of moisture from the skin and lungs. When the temperature exceeds 36.0 ℃, radiation, convection cooling