Redefining migraine phases - a suggestion based on clinical, physiological, and functional imaging evidence.

Cephalalgia · 2020 · PMC7366426 · PMID 31928343

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showed a trendno p-value reported

Of note, the after-image duration showed a trend towards elevation (in comparison to the interictal phase) starting 2 days before the headache and lasted up to 1 day after the headache stopped ( 22 ).

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