Brainstem hemorrhage and fever are more dangerous. The most common causes of brainstem hemorrhage causing fever are two: First, concurrent infections can be lung, gastrointestinal, urinary tract or skin infections, all caused by bacteria, which are complications of brainstem hemorrhage. The infection can cause sepsis and septicemia when it is more serious. Severe lung infection can cause peripheral respiratory failure leading to death, which requires active anti-infection treatment. If the body temperature is too high, it can cause aggravation of brain damage, and physical cooling by ice cap is required if necessary. Second, central hyperthermia, brainstem hemorrhage, the thermoregulatory center is damaged, sometimes will produce central hyperthermia, is caused by the upward shift of the temperature adjustment point, and is directly related to the regulatory dysfunction, anti-infective drugs and antipyretics are very poor, can only rely on physical cooling, sometimes need to use ice caps or ice blankets, if the hyperthermia is maintained at 40 degrees, will cause serious damage to the cells of the brain, even if the brainstem Even if the bleeding improves, the higher neurological functions of the brain will be damaged, which may cause cognitive decline, dementia or seizures, etc.