A headache very similar to migraine results when the external instead of the internal carotid artery is affected, but without the preliminary signs or the nausea and vomiting. The headache can be very severe and often seems to start in one temple or the other. It is more common than migraine and brought on by a similar set of conditions, so the two are often confused. A cervical tensional headache usually radiates towards the back of the head and may reach as far as the root of the neck. I believe the pain which can be crippling, to be caused by the walls of the artery going into a cramp. There is no aura or sickness with this condition
Treatment would include Interx, Shiatsu, Lymph drainage, Reflexology and Nutritional advice.