Neuroimaging should be done in patients with headache who have any of the following: 1. Decreased level of consciousness or impaired cognitive function; 2. Increased pain with exertion, sexual intercourse, coughing, sneezing, etc.; 3. Progressive worsening of pain, condition; 4. Cervical tonicity, CT is recommended first to see if there is a brain hemorrhage; 5. Focal neurological signs; 6. Patients over 50 years of age who have their first headache; 7. Most severe headache ; Headache does not have the specific form of primary headache.