Fever can be registered with the general internal medicine, if it is a baby, it is recommended to register with the general pediatrics. Fever can be caused by many illnesses, most of them are caused by bacterial infection or viral infection. In this case, it is important to go to the hospital for a routine blood test to check what causes the increase in blood count, such as viral or bacterial causes. If the fever is not particularly high, do not just blindly reduce the fever, but identify the cause as soon as possible, you can relieve the symptoms through physical cooling methods, such as using warm water baths or alcohol baths. If the body temperature continues to rise above 38.5 ℃, then you must take antipyretic drugs to reduce fever in time. When you have a fever, you must drink a lot of water, because water is the carrier of metabolic waste, which can accelerate the elimination of toxins.