• Dale R Nyholt, David Borsook, and Lyn R Griffiths.
• Institute of Health and Biomedical Innovation, Queensland University of Technology, 60 Musk Avenue, Brisbane, Queensland 4059, Australia.
• Nat Rev Neurol. 2017 Dec 1; 13 (12): 725-741.

AbstractMigraine is one of the world's most prevalent and disabling disorders and imposes an enormous socioeconomic burden. The exact causes of migraine are unknown, and no recognizable diagnostic pathological changes have been identified. Specific identifiable markers of migraine would aid diagnosis and could provide insight into the pathogenesis of the condition, with the potential to direct development of new therapeutics. In the past few years, advances in neuroimaging and genetic studies have provided the most substantial progress towards the identification of markers. A growing number of brain imaging studies have provided important insights into the brain mechanisms that underlie migraine symptoms during and between migraine attacks. Similarly, large-scale genome-wide association studies have identified genetic variants associated with the common forms of migraine - migraine with aura and migraine without aura. In total, 44 independent single-nucleotide polymorphism loci have been robustly associated with the risk of migraine and provide new evidence for the involvement of vascular mechanisms. Both imaging and genetics, therefore, have excellent potential as markers of migraine. In this Review, we provide a summary of results regarding current and potential neuroimaging and genetic markers of migraine, consider what conclusions can be drawn from these markers about migraine mechanisms and discuss the potential of combining imaging and genetics.

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