In this case I'm not referring to rebound headache, I'm talking about the possibility that taking a narcotic pain reliever could cause a migraine that is in progress to become worse. Despite being told it was my imagination, I've argued that Vicodin makes my migraines worse while Imitrex usually helps them. But because I have a heart defect, it is very hard to get Imitrex; aside from that my insurance only covers 9 a month, or less. Help?