Referred pain after painful stimulation of the greater occipital nerve in humans: Evidence of convergence of cervical afferences on trigeminal nuclei

Elcio Juliato Piovesan, P. A. Kowacs, Claudio Esteves Tatsui, M. C. Lange, L. C. Ribas, L. C. Werneck

Research output: Contribution to journalArticle

125 Scopus citations

Abstract

Cranial sensory innervation is supplied mainly by the trigeminal nerves and by the first cervical nerves. Excitatory and inhibitory interactions among those nerve roots may occur in a mechanism called nociceptive convergence, leading to loss of somato-sensory spatial specificity. Three volunteers in an experimental trial had sterile water injected over their greater occipital nerve on one side of the neck. Pain intensity was evaluated 10, 30 and 120 s after the injection. Two of the patients reported intense pain. Trigeminal autonomic features, suggestive of parasympathetic activation, were seen associated with trigeminally distributed pain. These data add to and reinforce previous evidence of convergence of cervical afferents on the trigeminal sensory circuit.

Original languageEnglish (US)
Pages (from-to)107-109
Number of pages3
JournalCephalalgia
Volume21
Issue number2
DOIs
StatePublished - Jul 5 2001

Keywords

  • Cervical spinal cord
  • Occipital nerve block
  • Pain

ASJC Scopus subject areas

  • Clinical Neurology

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