Fever can be categorized into a variety of categories, such as viral, bacterial, and infection-induced, as well as pneumonia, respiratory problems that are more common, and infections of the digestive tract, urinary tract, biliary tract, and intracranial. Intracranial is not necessarily caused by bacterial or viral infections, but may be caused by head injuries that cause problems in the brain’s regulatory center, causing centralized fever. Once received 1-2 patients, brain hemorrhage, brain injury is always fever, can not find the cause, every day there is a low fever, mainly because of the brain thalamus control thermoregulation center kinetic response, regulation point upward. Let’s say, 38 ℃ when the patient appeared uncomfortable, or generalized pain, cough, cough phlegm, nasal congestion, runny nose and other reactions. However, a central fever may be a response such as stimulating the body to sweat. A patient with central fever may go to 39°C without a single reaction being initiated. A very high trunk temperature, but very dry body skin and no sweating, is a shift upward of the regulatory point.