If the patient suddenly develops generalized pain, weakness, chills and headache, the first thing to consider is that the discomfort is caused by upper respiratory tract infection. If the symptoms are caused by upper respiratory tract infection, it is suggested that the patient can try to take some oral cold and flu medicines or medicines to clear heat and detoxify the body for treatment. In addition, if the patient is suffering from generalized weakness, aches and pains, chills and headache caused by influenza virus, he/she can go to the hospital for examination. If the flu virus is diagnosed, it can be treated with anti-influenza virus medication, such as oseltamivir, in cooperation with the doctor. If the symptoms cannot be relieved and the headache tends to worsen, you need to be alert to the discomfort caused by intracranial infection.