Migraine Resources Pathophysiology of Migraine   1. Hargreaves RJ. Shepheard SL. Pathophysiology of migraine: new insights. Can J Neurol Sci. 1999;26(suppl 3):S12–S19. 2. Goadsby PJ. Pathophysiology of headache. In: Silberstein SD, Lipton RB, Dalessio DJ, eds. Wolff's Headache and Other Head Pain. 7th ed. New York, NY: Oxford University Press; 2001:57–63.