What is the cause of headache and fever accompanied by vomiting?

Children with headache fever accompanied by vomiting may be caused by viral encephalitis, gastrointestinal cold, upper respiratory tract infection, viral infection, etc. It is recommended to take the baby to the doctor in time for treatment. If it is gastrointestinal cold, you need to use anti-inflammatory drugs under the guidance of the doctor. When the baby has a fever of more than 38.5 degrees, you also need to use antipyretic treatment.