http://articles.mercola.com/sites/articles/archive/2004/07/31/headache-burden.aspxThe pain and duration of the lingering headache may be annoying, but generally not life threatening. Taking productivity and quality of life issues into account, however, many experts believe headaches pose a heavy burden on people. Why do headaches haveenCommunityServer 2008.5 SP1 (Build: 31106.3070)