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Related Experiment Videos

Postherpetic gustatory flushing and sweating.

P D Drummond, G M Boyce, J W Lance

    Annals of Neurology
    |June 1, 1987
    PubMed
    Summary

    Facial herpes zoster can lead to gustatory sweating and flushing due to nerve damage. This condition, similar to Frey's syndrome, involves altered sensory and autonomic responses in scarred facial areas.

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    Area of Science:

    • Neurology
    • Dermatology
    • Autonomic Nervous System Research

    Background:

    • A case study of an 11-year-old girl with a history of right facial herpes zoster at age 6.
    • The patient presented with anesthetic scars in the trigeminal nerve's third division distribution.

    Observation:

    • Localized flushing and sweating in scarred areas were triggered by specific tastes.
    • The response exhibited a short latency and lasted 10-15 minutes, primarily evoked from the posterior tongue.
    • Local anesthesia of the tongue abolished the response, while ganglion blockade had varied effects, with mandibular nerve blockade diminishing it.

    Findings:

    • Damage to sympathetic fibers accompanying trigeminal nerve branches is hypothesized.
    • Reinnervation by parasympathetic fibers involved in salivation may explain the gustatory-induced autonomic response.
    • Thermoregulatory sweating and flushing were reduced in the affected facial regions.

    Implications:

    • This phenomenon is analogous to Frey's syndrome, a known condition of gustatory sweating after auriculotemporal nerve damage.
    • Highlights the complex interplay between sensory nerves, autonomic fibers, and localized physiological responses after viral injury.
    • Suggests potential mechanisms for aberrant autonomic responses following peripheral nerve damage and subsequent aberrant reinnervation.

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