Adults with 37.8℃ is a low fever, generally do not need to use antipyretic drugs, the main focus is on physical cooling, you can drink more water appropriately. If the body temperature continues to rise, greater than 38.5 ℃, or there are obvious symptoms of discomfort, antipyretic drugs can be used appropriately. Patients with fever need to do routine blood tests and need to initially determine what the cause of the fever is, whether it is a bacterial infection or a viral infection. If a bacterial infection is considered, antibiotics are needed. If it is a viral infection, oral antiviral medication can be given. Of course, the cause of some fevers is more complex and cannot be determined by routine blood tests alone, so you need to go to a specialist physician at a specialized hospital.