The intracellular pH (pHi) of cerebral cortex was measured in migraine patients by use of in vivo phosphorus-31 NMR spectroscopy. No changes in pHi were measured during a migraine attack. The long-standing concept that the headache of migraine is due to cerebral vasodilation induced by prodromal vasospasm-induced ischemic acidosis is not substantiated.
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Welch et al. (1988) studied this question.
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