Migraine with aura is a prevalent neurological disorder that affects up to 30% of individuals experiencing migraines. It presents as temporary neurological disturbances, primarily visual, but also includes sensory, speech, motor, and brainstem symptoms. The underlying pathophysiology is closely tied to cortical spreading depression, which initiates neurovascular and inflammatory changes. Epidemiological studies show significant variations in the prevalence of migraine with aura across different demographics, with a more pronounced effect observed among women. Genetic research has identified both common and rare variants that influence susceptibility to migraine with aura, with genome-wide association studies revealing distinct risk loci. Neuroimaging studies indicate structural and functional alterations in cortical and subcortical areas, reinforcing the role of altered brain connectivity in migraine with aura. Additional studies, including various neurophysiological techniques (such as EEG, VEP, or TMS), are needed to potentially identify specific patterns within MA that would help better characterise clinical and electrophysiological phenotypes. Differential diagnosis is essential, as migraine aura symptoms may overlap with a wide range of primarily neurological paroxysmal disorders. While the treatment of migraine traditionally prioritises the headache, there is limited evidence for targeted therapies addressing aura symptoms; further research is warranted. This systematic review offers a comprehensive synthesis of aura types, epidemiology, genetics, pathophysiology, diagnosis, and management of migraine with aura, emphasising areas for future exploration.

• Klíčová slova
• Cortical spreading depression, Migraine with aura, Typical aura with headache, Typical aura without headache,
• MeSH
• lidé MeSH
• migréna s aurou * patofyziologie   diagnóza   epidemiologie   genetika   MeSH
• Check Tag
• lidé MeSH
• Publikační typ
• časopisecké články MeSH
• přehledy MeSH
• systematický přehled MeSH

Background: Migraine research is booming with the rapidly developing neuroimaging tools. Structural and functional alterations of the migrainous brain were detected with MRI. The outcome of a research study largely depends on the working hypothesis, on the chosen measurement approach and also on the subject selection. Against all evidence from the literature that migraine subtypes are different, most of the studies handle migraine with and without aura as one disease. Methods: Publications from PubMed database were searched for terms of "migraine with aura," "migraine without aura," "interictal," "MRI," "diffusion weighted MRI," "functional MRI," "compared to," "atrophy" alone and in combination. Conclusion: Only a few imaging studies compared the two subforms of the disease, migraine with aura, and without aura, directly. Functional imaging investigations largely agree that there is an increased activity/activation of the brain in migraine with aura as compared to migraine without aura. We propose that this might be the signature of cortical hyperexcitability. However, structural investigations are not equivocal. We propose that variable contribution of parallel, competing mechanisms of maladaptive plasticity and neurodegeneration might be the reason behind the variable results.

• Klíčová slova
• DTI, functional MRI, microstructure, migraine with and without aura, pathomechanism,
• Publikační typ
• časopisecké články MeSH
• přehledy MeSH

Background: Formerly white matter abnormalities in a mixed group of migraine patients with and without aura were shown. Here, we aimed to explore white matter alterations in a homogeneous group of migraineurs with aura and to delineate possible relationships between white matter changes and clinical variables. Methods: Eighteen patients with aura, 25 migraine patients without aura and 28 controls were scanned on a 1.5T MRI scanner. Diffusivity parameters of the white matter were estimated and compared between patients' groups and controls using whole-brain tract-based spatial statistics. Results: Decreased radial diffusivity (p < 0.036) was found bilaterally in the parieto-occipital white matter, the corpus callosum, and the cingular white matter of migraine with aura (MwA) patients compared to controls. Migraine without aura (MwoA) patients showed no alteration compared to controls. MwA compared to MwoA showed increased fractional anisotropy (p < 0.048) in the left parieto-occipital white matter. In MwA a negative correlation was found between axial diffusivity and disease duration in the left superior longitudinal fascicle (left parieto-occipital region) and in the left corticospinal tract (p < 0.036) and with the number of the attacks in the right superior longitudinal fascicle (p < 0.048). Conclusion: We showed for the first time that there are white matter microstructural differences between these two subgroups of migraine and hence it is important to handle the two groups separately in further researches. We propose that degenerative and maladaptive plastic changes coexist in the disease and the diffusion profile is a result of these processes.

• Klíčová slova
• DTI, TBSS, microstructure, neurodegeneration, plasticity, white matter,
• Publikační typ
• časopisecké články MeSH