Journal
NEUROLOGY
Volume 66, Issue 7, Pages 1108-1110Publisher
LIPPINCOTT WILLIAMS & WILKINS
DOI: 10.1212/01.wnl.0000204225.15947.f8
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Using PET with the opioidergic ligand [C-11] diprenorphine, the authors demonstrate decreased tracer binding in the pineal gland of cluster headache patients vs healthy volunteers. Opioid receptor availability in the hypothalamus and cingulate cortex depended on the duration of the headache disorder. Therefore, the pathophysiology of cluster headache may relate to opioidergic dysfunction in circuitries generating the biologic clock.
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