Pathogenesis of symptomatic facial hemiatrophy

: The data on clinical and electroencephalographic examination of 19 patients are presented. The patients developed facial hemiatrophy after they had sustained ganglionitis of the superior cervical sympathetic ganglion, stem encephalitis, trifacial neuralgia (neuritic stage), tumours of the Gasserian ganglion and syringobulbia. A pathogenetic relationship between the development of symptomatic facial hemiatrophy and lesions of the vegetative and somatic apparatus in the cerebral (mesencephalotruncal area) and extracerebral (superior cervical sympathetic ganglion) structures of the nervous system is noted.