Key to diagnosis of cervicogenic headache is the examination of the anterior cervical spine.
McFadden
John W
JW
D002574:Cervical Vertebrae; D006261:Headache / Q000175:diagnosis* / Q000209:etiology*; D006801:Humans; D007405:Intervertebral Disc Displacement / Q000150:complications* / Q000175:diagnosis*