Article (Scientific journals)
Orbitofrontal cortex involvement in chronic analgesic-overuse headache evolving from episodic migraine
Fumal, Arnaud; Laureys, Steven; Di Clemente, Laura et al.
2006In Brain: a Journal of Neurology, 129 (Pt 2), p. 543-550
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Keywords :
PET; orbitofrontal cortex; migraine; addiction; medication overuse headache
Abstract :
[en] The way in which medication overuse transforms episodic migraine into chronic daily headache is unknown. To search for candidate brain areas involved in this process, we measured glucose metabolism with 18-FDG PET in 16 chronic migraineurs with analgesic overuse before and 3 weeks after medication withdrawal and compared the data with those of a control population (n = 68). Before withdrawal, the bilateral thalamus, orbitofrontal cortex (OFC), anterior cingulate gyrus, insula/ventral striatum and right inferior parietal lobule were hypometabolic, while the cerebellar vermis was hypermetabolic. All dysmetabolic areas recovered to almost normal glucose uptake after withdrawal of analgesics, except the OFC where a further metabolic decrease was found. A subanalysis showed that most of the orbitofrontal hypometabolism was due to eight patients overusing combination analgesics and/or an ergotamine-caffeine preparation. Medication overuse headache is thus associated with reversible metabolic changes in pain processing structures like other chronic pain disorders, but also with persistent orbitofrontal hypofunction. The latter is known to occur in drug dependence and could predispose subgroups of migraineurs to recurrent analgesic overuse.
Disciplines :
Neurosciences & behavior
Neurology
Author, co-author :
Fumal, Arnaud ;  Centre Hospitalier Universitaire de Liège - CHU > Neurologie CHR
Laureys, Steven  ;  Université de Liège - ULiège > Centre de recherches du cyclotron
Di Clemente, Laura
Boly, Mélanie ;  Université de Liège - ULiège > Neurologie
Bohotin, Valentin
Vandenheede, Michel
Coppola, Gianluca
Salmon, Eric  ;  Université de Liège - ULiège > Département des sciences cliniques > Neuroimagerie des troubles de la mémoire et révalid. cogn.
Kupers, Ron
Schoenen, Jean  ;  Université de Liège - ULiège > Département des sciences biomédicales et précliniques > Neuro-anatomie
Language :
English
Title :
Orbitofrontal cortex involvement in chronic analgesic-overuse headache evolving from episodic migraine
Publication date :
February 2006
Journal title :
Brain: a Journal of Neurology
ISSN :
0006-8950
eISSN :
1460-2156
Publisher :
Oxford Univ Press, Oxford, United Kingdom
Volume :
129
Issue :
Pt 2
Pages :
543-550
Peer reviewed :
Peer Reviewed verified by ORBi
Available on ORBi :
since 30 January 2012

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