2012
DOI: 10.1111/j.1526-4610.2012.02276.x
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In Medication‐Overuse Headache, fMRI Shows Long‐Lasting Dysfunction in Midbrain Areas

Abstract: Our study showed that MOH patients present dysfunctions in the mesocorticolimbic dopamine circuit, in particular in the ventromedial prefrontal cortex and in the substantia nigra/ventral tegmental area complex. The ventromedial prefrontal cortex dysfunctions seem to be reversible and attributable to the acute/chronic headache, whereas the substantia nigra/ventral tegmental area complex dysfunctions are persistent and possibly related to medication overuse. These dysfunctions might be the expression of long-las… Show more

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Cited by 69 publications
(56 citation statements)
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“…In addition, neuroimaging studies suggest changes in the orbitofrontal cortex and the mesocorticolimbic dopamine circuit [Fumal et al 2006;Ferraro et al 2012]. …”
Section: Pathogenesismentioning
confidence: 99%
“…In addition, neuroimaging studies suggest changes in the orbitofrontal cortex and the mesocorticolimbic dopamine circuit [Fumal et al 2006;Ferraro et al 2012]. …”
Section: Pathogenesismentioning
confidence: 99%
“…What previous literature showed is that, compared to those with episodic migraine, patients with CM have different clinical features, which include problematic lifestyle, MO, genetic, metabolic and physiologic characteristics [5][6][7]. However, once chronification process has developed, there might be different degrees of disease severity, in terms of headaches frequency and type of overused medications.…”
Section: Discussionmentioning
confidence: 92%
“…Approximately, 2 % of general population suffers from CM-MO [2,3], and 2.5 % of migraineurs progress to CM each year [4]. Although the process of chronification has not been completely understood yet, it seems that lifestyle, comorbid conditions, genetic and metabolic factors [5,6], abnormal somatosensory cortex excitability [7] and MO itself [8,9] have a role.…”
Section: Introductionmentioning
confidence: 98%
“…In cocaine, or other drug abusers, dopaminergic neurotransmitters play a very important role in visuospatial attention [55,56]. MOH patients also present dysfunctions in the mesocorticolimbic dopamine-circuit [57], which has been consistently implicated in drug dependence [58]. Furthermore, genetic predisposition to MOH is traced to the polymorphisms of dopamine-related genes [59,60].…”
Section: Discussionmentioning
confidence: 99%