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Related Experiment Videos

Auricular syncope.

A Thakar1, K K Deepak, S Shyam Kumar

  • 1Department of Otorhinolaryngology and Head-Neck Surgery, All India Institute of Medical Sciences, New Delhi, India. meenaal@vsnl.com

The Journal of Laryngology and Otology
|October 13, 2007
PubMed
Summary
This summary is machine-generated.

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A rare syndrome caused recurrent fainting spells triggered by light ear canal stimulation was identified. Avoiding ear scratching completely resolved symptoms, suggesting a vagal nerve reflex mechanism.

Area of Science:

  • Neurology
  • Autonomic Neuroscience

Background:

  • Recurrent syncopal attacks can be debilitating.
  • Previous treatments for presumed absence seizures were ineffective in this case.

Observation:

  • A 13-year-old girl experienced syncopal episodes triggered by light stimulation of the external auditory canal.
  • Autonomic function tests revealed a hyperactive vagal response, including bradycardia and lightheadedness, upon stimulation of the left ear canal's posterior wall.

Findings:

  • The patient's symptoms were completely resolved by avoiding ear scratching.
  • This suggests a previously undocumented reflex syncope syndrome.

Implications:

  • Stimulation of the auricular branch of the vagus nerve may cause reflex syncope.

Related Experiment Videos

  • This finding highlights the importance of detailed patient history in diagnosing unusual neurological presentations.