Headache Disorders in the Millennium Cohort: Epidemiology and Relations With Combat Deployment

Service members from all branches of the military completed paper-and-pencil surveys as part of the Millennium Cohort Study. Researchers were interested in exploring the association between deployment and combat exposure with migraine and headache disorders. Results indicate that Service members who had been deployed were more likely to experience new onset headaches, including migraines, recurrent severe headaches, and headaches that “bother you a lot."