Prescription pain killers such as Vicodin (hydrocodone) OxyContin (oxycodone), Opana (oxymorphone) and methadone can cause significant rebound headaches in chronic migraineurs who use these drugs. The over-use of these drugs is alarming. There were enough prescriptions written for these drugs in 2010 to medicate every adult in America, around the clock for a month. The drug companies are laughing all the way to the bank. In 1999, 4000 deaths due to these drugs were reported. Just 9 years later that...