What is the role of substance P neurons in the pathogenesis of cluster headache (CH)?

Updated: Jun 07, 2019
  • Author: Michelle Blanda, MD; Chief Editor: Tarakad S Ramachandran, MBBS, MBA, MPH, FAAN, FACP, FAHA, FRCP, FRCPC, FRS, LRCP, MRCP, MRCS  more...
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Answer

Substance P neurons carry sensory and motor impulses in the maxillary and ophthalmic divisions of the trigeminal nerve. These connect with the sphenopalatine ganglion and interior carotid perivascular sympathetic plexus. Somatostatin inhibits substance P and reduces the duration and intensity of CH.


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