Bilateral asymmetry of cerebral blood velocity in cluster headache

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In this study, 69 episodic cluster headache (CH) patients (40 in the active phase, 29 in remission period) underwent a complete TCD examination in order to verify the relationship between cerebral blood velocities (CBVs) and the clinical profile of the disease. Fifteen patients were examined during both phases, while 7 were monitored during a spontaneous attack. Sixty-three healthy sex and age-matched controls were also studied. We measured widespread, asymmetric CBV activation during the active phase, bilaterally in the anterior circulation and also in the posterior circulation. A relative reduction of CBV on the anterior cerebral artery pain side, also during remission, suggests a relationship between local vasodilation and the autonomic symptoms ipsilateral to pain during CH attacks.

Original languageEnglish
Pages (from-to)346-351
Number of pages6
Issue number5
Publication statusPublished - 1994


  • autonomic symptoms
  • cluster headache
  • transcranial Doppler
  • vasodilation

ASJC Scopus subject areas

  • Clinical Neurology


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