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Related Experiment Videos

Gustatory sweating: clinical implications and etiologic aspects.

R Laskawi1, M Ellies, R Rödel

  • 1Department of Otolaryngology, Head and Neck Surgery, University of Göttingen, Germany.

Journal of Oral and Maxillofacial Surgery : Official Journal of the American Association of Oral and Maxillofacial Surgeons
|June 15, 1999
PubMed
Summary
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Gustatory sweating, commonly known as Frey's syndrome, frequently occurs after parotidectomy, often triggered by chewing. This study clarifies its incidence and characteristics following various head and neck surgeries.

Area of Science:

  • Otolaryngology
  • Neurosurgery
  • Plastic Surgery

Background:

  • Gustatory sweating, or Frey's syndrome, is characterized by gustatory-induced sweating and flushing in the preauricular and temporal areas.
  • It is a common complication following surgery involving the parotid gland, due to aberrant regeneration of parasympathetic nerve fibers.

Purpose of the Study:

  • To provide detailed clinical information on various types of gustatory sweating.
  • To reevaluate patients who underwent parotidectomy, submandibular gland removal, or neck dissection.

Main Methods:

  • A retrospective analysis of 548 patients' self-reported symptoms of gustatory sweating.
  • Patients were categorized based on prior surgical procedures: parotidectomy (n=296), submandibular gland extirpation (n=79), and neck dissection (n=173).

Related Experiment Videos

  • Minor's test was used to verify gustatory sweating in some cases.

    • Main Results:

    • 45% of patients experienced gustatory sweating after parotidectomy, with symptoms typically appearing within 6 months.
    • Only 1.5% of patients reported gustatory sweating after submandibular gland extirpation, and none after neck dissection.
    • The "masticatory component" was identified as a significant trigger for Frey's syndrome, and symptoms were often localized to the area of parotid gland removal.

    Conclusions:

    • Gustatory sweating results from aberrant sympathetic or parasympathetic reinnervation of sweat glands following nerve injury.
    • Misdirected parasympathetic regeneration is the primary mechanism for Frey's syndrome after parotidectomy.
    • A clinically oriented classification of gustatory sweating (Types I-III) is proposed for better understanding and management.