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References:

The International Headache Society. "The International Classification of Headache Disorders, 2nd Edition." (ICHD-II) September, 2004. www.i-h-s.org.

Goadsby, Peter J., MD, PhD, DSc, FRACP, FRCP; Silberstein, Stephen D., MD, FACP; Dodick, David W., MD, FRCPD, FACP. "Chronic Daily Headache for Clinicians." Hamilton, Ontario: BC Decker. 2005.

Li, D & Rozen, TD (2002). "The clinical characteristics of new daily persistent headache." Cephalalgia 22 (1), 66-69. doi: 10.1046/j.1468-2982.2002.00326.x.

Medical review by John Claude Krusz, PhD, MD.

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© Teri Robert, 2004 to present. Last updated January 2, 2010.