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The brain protocol and cervical spine protocol are slightly different and thus there can be small difference of calculation because of the technique.
The headache may not be dependent on the herniation mass as sometimes massive mass herniation may be asymptomatic. Thus your neurologist may need to consider the other causes of headaches too. Even Addison disease is known to contribute to headache.
Most headaches are caused by following:
Chronic daily headache
Chronic daily headache is not a type of headache but frequent headaches of various kinds. Most people with chronic daily headache have migraine or tension-type headache as the underlying type of headache. Tension headaches are the most common type of primary headache. So probably this would be the first to be considered in the differential diagnosis of your headache also. A tension headache is a headache caused by tense muscles in the face, neck, or scalp. These headaches give a feeling of tightness around the head. The neck muscles can also become sore and tight. Tension headaches can be caused by staying in one position for a long time, such as reading, playing video games or using a computer.
Migraine headaches are the second most common type of primary headache. Cluster headaches are a rare type primary headache.
It is difficult to differentiate between migraine and tension type headache without an examination. There are other causes of headache also;
1) sinus headache
2) Medication overuse headache
3) Post trauma headache; occur after injury or accident.
4) Secondary headache; brain tumor.
Please feel free for your follow up questions.
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