The sphenopalatine ganglion is a structure that has been implicated in the mediation of headache and facial pain for many decades. The neuralgia of this structure is part of a group of headaches known as the trigeminal autonomic cephalgias. This structure is one of only four predominantly parasympathetic ganglia within the head. Blockade of this structure may occur in three ways and can be both diagnostic and therapeutic. In addition, performing blockade of the sphenopalatine ganglion involves significant risk and must be undertaken with ample preoperative planning. Research continues to develop in the regulation of this structure to alleviate chronic headaches and facial pain in many forms.
KeywordsTrigeminal autonomic cephalgia Trigeminal neuralgia Sphenopalatine ganglion Pterygopalatine fissure Headache Sphenopalatine ganglion block
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