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Epidemiology

Approximately 64-77% of people have a headache at some point in their lives [Manzoni, Stovner]. During each year, on average, 46-53% of people have headaches [Manzoni, Stovner]. Most of these headaches are not dangerous. Only approximately 1-5% of people with headaches who go to the emergency room have a serious underlying cause. [emergency medicine secrets, wiki current 25]. More than 90% of headaches are primary headaches [wiki current 26]. Most of these primary headaches are tension headaches [Stovner]. Most people with tension headaches have “episodic” tension headaches that come and go. Only 3.3% of adults have chronic tension headaches, with headaches for more than 15 days in a month. [stovner] Approximately 12-18% of people in the world have migraines [Stovner]. More women than men experience migraines. In Europe and North America, 5-9% of men experience migraines, while 12-25% of women experience migraines [Manzoni]. Other areas of the world have fewer people with migraines for unclear reasons [Stovner]. Cluster headaches are very rare. They affect only 1-3 per thousand people in the world. Cluster headaches affect approximately three times as many men as women [Stovner].

[Manzoni] Manzoni GC, Stovner LJ. Epidemiology of headache. Handb Clin Neurol. 2010;97:3-22.

[Stovner] Stovner LJ, Andree C. Prevalence of headache in Europe: a review for the Eurolight project. J Headache Pain. 2010;11(4):289-299. [PubMed: 20473702] [wiki original 25] Mattu, Amal; Goyal, Deepi; Barrett, Jeffrey W.; Broder, Joshua; DeAngelis, Michael; Deblieux, Peter; Garmel, Gus M.; Harrigan, Richard; Karras, David; L'Italien, Anita; Manthey, David (2007). Emergency medicine: Avoiding the pitfalls and improving the outcomes. Malden, MA: Blackwell / BMJ Books. p. 39.ISBN 1405141662. [Wiki original 26] Kunkel, Robert S. (2010-08-01). "Headache". Disease Management Project: Publications. Cleveland Clinic. Retrieved 2010-08-06.