Herpes Simplex Polyganglionitis

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Abstract
Evidence suggests that many cranial nerve syndromes, such as migraine headache, acute vestibular neuronitis, globus hystericus, carotidynia, acute facial paralysis (Bell's palsy), and Meniere's disease, are caused by the neurotropic herpes simplex virus (HSV). Because transitory cranial nerve dysfunction during acute HSV infection can be asymptomatic but often occurs in conjunction with mucocutaneous vesicles, we tested five subjects with herpes labialis for cranial nerve dysfunction. Four of the subjects had hypesthesia of the trigeminal nerve (which recurred in two); four, hypesthesia of the glossopharyngeal nerve; and two, hypesthesia of the second cervical nerve. Three of the subjects had positional or spontaneous nystagmus (which recurred in one); one of the subjects had a unilateral, decreased caloric response of 50%. Unilateral weakness of the cricothyroid muscle or the palate occurred in three of the subjects (and recurred in one). Volitional electromyograms were normal in all the subjects, but two of the subjects had increased facial nerve latency (which recurred in one). Similar findings of an acute, transitory nature should suggest to the clinician a viral polyganglionitis caused by HSV infection.

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