Ok, so i am hearing "triggers" set off migraines. Last time my son was with me at the V.A. hospital checking on a job- he ate popcorn a vet was selling. I know they sometimes use a flavoring- MSG maybe? Today he ate some food my sisters house cleaner made- some type of Korean food. Orientals- Japanese, Koreans, etc use MSG a lot, do they not? Just wondering if it is something he had eaten??