I don't have occipital neuralgia either. But I'm having a trial occipital nerve stimulator implanted in a few weeks and I've had some relief from occipital nerve blocks. The point I'm trying to make is that, although my head pain also comes from the brain and treating the occipital nerve isn't going to stop that cause, it has the possibility of eliminating the symptoms. The surgery you mention sounds a little drastic for people without the ON, but don't rule out treating your nerves because you have inner head pain.
DX: NDPH, Recovered CRPS
RX: Lamictal, Abilify, Verapamil, Provigil, Clonazepam, Rozerem, Emsam
PRN: DHE IM, Droperidol IM, Toradol IM, Haloperidol, Zyprexa, Lodine, Thorazine, Zofran