1. International Headache Society: International classification of headache disorders, edn 2. Released October 1, 2003, 56–62. www.i-h-s.org. Accessed June 8, 2004. This entire updated classification of headache disorders is the generally accepted standard. It should be reviewed by anyone doing headache research or interested in current criteria for diagnosis.
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3. Raskin NH: Post-traumatic headache: the postconcussion syndrome. In Headache, edn 2. Philadelphia: Churchill Livingstone; 1988:269–281.
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5. Branca B, Lake AE, Saper JR: Significant MMPI-2 scale elevations: chronic post-traumatic headache versus chronic daily headache patients. Headache 1992, 32:260.