title: Migraine and structural abnormalities in the brain.
abstract: OBJECTIVE
  The aim is to provide an overview of recent studies of structural brain abnormalities in migraine and to discuss the potential clinical significance of their findings.
  
  
  RESULTS
  Brain structure continues to be a topic of extensive research in migraine. Despite advances in neuroimaging techniques, it is not yet clear if migraine is associated with grey matter changes. Recent large population-based studies sustain the notion of increased prevalence of white matter abnormalities in migraine, and possibly of silent infarct-like lesions. The clinical relevance of this association is not clear. Structural changes are not related to cognitive decline, but a link to an increased risk of stroke, especially in patients with aura, cannot be ruled out.
  
  
  CONCLUSIONS
  Migraine may be a risk factor for structural changes in the brain. It is not yet clear how factors such as migraine sub-type, attack frequency, and sex affects this association. Additional longitudinal studies are needed to address these issues. Brain structure changes in migraine could potentially serve as disease biomarkers or as a mean of identifying sub-groups of patients with specific therapeutic needs and prognoses.
authors.affiliation: Danish Headache Center and Department of Neurology, Glostrup Hospital, Faculty of Health and Medical Sciences, University of Copenhagen, Denmark.
authors.forename: Anders
authors.initials: A
authors.lastname: Hougaard
authors.forename: Faisal Mohammad
authors.initials: FM
authors.lastname: Amin
authors.forename: Messoud
authors.initials: M
authors.lastname: Ashina
mesh_terms: D001921:Brain / Q000473:pathology; D020520:Brain Infarction / Q000473:pathology; D066128:Gray Matter / Q000473:pathology*; D006801:Humans; D008279:Magnetic Resonance Imaging; D008881:Migraine Disorders / Q000473:pathology*; D066127:White Matter / Q000473:pathology*