Symptoms in the face and head can be related to the upper cervical spine. If you have a condition called basilar invagination, the junction between the base of the skull and the spine can cause a kinking of the spinal cord which can cause similar symptoms. The greater and lesser occipital nerves exit from C2-3 and C3-4 respectively and cover the back of the head and ears. Irritation to those nerves can cause back of the skull headaches.
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