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First of all we would like to thank Manzoni et al. for the deep and thoughtful discussion on chronic migraine (CM) classification [1]. All of us who deal with CM patients feel sharp need in universal and complete classification of this complicated and ambiguous disorder, especially taking into account the problem of medication overuse [2, 3]. Below, we present our opinion on the latest revision of the ICHD-2 for migraine suggested by the Italian team and propose new revision of CM diagnostic criteria for ICHD-3.

Chronic migraine classification: one more attempt of optimization and criteria revision