http://articles.mercola.com/sites/articles/archive/2006/08/26/dont-treat-migraines-by-overusing-pain-meds.aspxA study indicates that patients with chronic daily headache, also known as transformed migraines, may benefit from abruptly stopping use of overused pain medications. An exercise regimen, in combination with preventive medications, can then cause theenCommunityServer 2008.5 SP1 (Build: 31106.3070)