Dizziness, muscle pain, weakness, and chills are generally systemic symptoms caused by viral infection, which will replicate in the human body and produce viraemia, resulting in a series of clinical symptoms. If the patient has fever, there will be chills during the period of rising fever temperature, and in severe cases, chills will also occur. When the temperature rises above the normal standard, the chills will be relieved, and at this time, the fever is usually above 38.5℃ when the body temperature is measured. At the same time, there is often dizziness, sometimes with a headache, and in severe cases, there is also obvious rotation of vision, accompanied by nausea and vomiting, which is caused by vestibular dysfunction, and viral infections often cause edema of the vestibular membrane vagina, causing it to be more sensitive and prone to dizziness.