GN may be caused by compression of somatic sensory branch of cranial nerve VII which goes through the nervus intermedius. In sufferers of GN, signals sent along these nerves are altered and interpreted by the<unk>  ganglion (a structure in the brain) as GN pain. GN may also develop following herpes zoster oticus (Ramsay Hunt syndrome), where cold sores occur on the ear drum or ear. This may also be associated with facial paresis (weakness), tinnitus, vertigo and deafness. Disorders of lacrimation, salivation and/or taste sometimes accompany the pain. There is a common association with herpes zoster.
Geniculate ganglionitis
Jugular foramen syndrome
Transverse myelitis
Epidural abscess
Occipital horn syndrome
Spinal epidural hematoma
Acute flaccid myelitis
Cerebellopontine angle syndrome