Headache and fever may be caused by infectious diseases, viral colds, heat stroke and other factors, patients should consult a doctor in time to clarify the cause of the disease and then treat it. 1. Infection: Infectious diseases that can cause headache and fever are central and non-central. (1) Central: If the patient suddenly has a headache and fever and is accompanied by depression, neck stiffness when lowering the head, generalized weakness and other symptoms, it should be considered to be caused by central nervous system infections, and should consult a doctor in a timely manner, under the guidance of the doctor to carry out treatment. (2) Non-central: common non-central infections that can cause headache and fever are gastrointestinal infections and respiratory infections, the former will be accompanied by abdominal pain and diarrhea, and the latter will be accompanied by coughing and sputum, etc., which can be treated under the guidance of a doctor for the original disease. 2. Viral colds: viral infections caused by upper respiratory tract infections, the patient will have a headache, fever, cough, cough phlegm, sore throat and other symptoms, such people should drink more hot water, maintain adequate sleep, can be appropriate physical exercise, if necessary, you can use acetaminophen for treatment. 3. Heatstroke: If headache, fever, dizziness, tinnitus and other symptoms occur in an airless environment with high temperature and humidity in summer, it should be considered to be caused by heatstroke, and this kind of people can cool down their temperature through ice caps and other ways, and use ice blankets when necessary. All of the above medications and treatments should be used under a doctor’s supervision.