Headache is one of the common symptoms of fever and headache without fever is also not rare in general pediatric clinics. The common causes of these headaches involve extracranial infection due to viral illness, migraine and trauma. Headache with vomiting, fever and meningeal signs suggests meningitis. Taking blood pressure is necessary, even though headache caused by hypertension is rare in children. Neuroimaging should be performed with abnormal neurological findings, atypical headache pattern, or significant change of preexisting headache. Serious underlying diseases, such as brain tumor or intracranial hemorrhage, are uncommon, however they should be diagnosed immediately using neuroimaging because of their urgency.