I had terrible migraines when we lived in California, back in the '70's, especially when the Santa Ana winds blew. My doctor who also taught at UCLA Medical Center said they'd been experimenting with B-12 shots for migraines there, and he started me on them, once a month. I had no faith whatsoever when he suggested this, but relief was immediate. I would think you could take the methocobalamin B-12 which is available now. It wouldn't hurt and might even help both the head aches and PN if you aren't already taking it.