What is the difference between nerve damage in head region and a migraine? Clean mri. Details please. Constant numbness.

Migraines are related to bloodflow not Murphy injury. Migraine headaches are due to changes in blood flow to the brain not neuronal injury per se. However, migraine headaches can be a cause of small bright spots in the white matter tracks of the brain as seen on mri. Your constant numbness could be caused by changes in the spine and not the brain.