traction or sprain may likewise cause headache through disturbance of the vertebral arterial nerves , the posterior cervical autonomic system or the spinal accessory nerves which originate in delicate filaments from all points of the cervical spinal cord.a syndrome described by skillern-migraine-like suboccipital and retro-orbital headache-is due to disturbance of the second cervical nerve , which communicates with the first division of the trigeminal nerve .
C0149931
migraine
C0018681
headache