Sensitivity to Acute Cerebral Ischemia in Migrainers

"All consecutive patients eligible to the study will be included within 7 days of their initial admission, and evaluated with a short questionnaire classifying them as migrainers whose status will undergo a detailed validation at 3 months by a migraine expert, and non-migrainers whose status will be validated by repeating the short questionnaire at the follow-up visit at 3 months.~Initial multimodal imaging, done routinely in any stroke patient, will acquire the raw data necessary to calculate the mismatch ratio (MRI DWI/PWI or CT rCBF/CTP). All radiological data will be analyzed centrally after the end of the recruitment, by investigators blinded to the migraine status."