&NA;In this communication the authors describe a method for the surgical treatment of glossopharyngeal neuralgia by percutaneous radiofrequency coagulation of Andersch's petrous ganglion. The report is of the initial results in 12 cases, including 1 case of primary glossopharyngeal neuralgia. The usual indication for the procedure is intractable pain due to local neoplasia of the oral area. At the time of operation complementary radiofrequency coagulation of both the gasserian ganglion and the cervical radicular nerves can also be carried out.