The most common cause of dizziness and fever is the flu, which requires prompt temperature measurement. If the body temperature does not exceed 38.5℃, you can drink more water or use physical cooling methods such as alcohol baths and hot baths to cool down your body. If the body temperature exceeds 38.5℃, you can take ibuprofen granules and busulfan oral solution to reduce fever. The other condition may be viral encephalitis, which requires routine blood tests, EEG and brain CT. treatment is intravenous acyclovir or ribavirin, mannitol to control cerebral edema and lower intracranial blood pressure, and immunoglobulin to improve immunity. The course of the disease is about 2 weeks, and most of them can be cured.