Occasionally, either the C2 or C3 nerve root can get pinched as it leaves the cervical spine. These are mostly sensory nerve roots, and if they are pinched it can cause a chronic headache. Pain is generally felt in the back of the head or the occipital region.
The headache can usually be relieved through one or a combination of conservative treatments, including:
In very severe cases (which are rare), a surgical decompression of the nerve root may be needed to relieve pressure on the nerve.