Primary headache is a headache not caused by another medical condition. Neurological examination, results of CT, MRI and other tests are usually normal (1). Your doctor can make a diagnosis on the basis of your personal medical history and physical examination. Primary headaches include (2):
- Aura (for example, flashing lights) within 1 hour before a headache onset. Often there is no aura.
- Pounding, throbbing pain, usually on one side of the head (sometimes on both sides), lasting from 4 to 72 hours.