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Lhermitte's Sign: The Current Status.

Supreet Khare1, Deeksha Seth2

  • 1Armed Forces Medical College, Pune, India.

Annals of Indian Academy of Neurology
|May 29, 2015
PubMed
Summary
This summary is machine-generated.

Lhermitte's sign, an electric shock-like sensation triggered by neck flexion, is often associated with multiple sclerosis. Pathophysiology involves demyelination and hyperexcitability, with other causes including transverse myelitis and trauma.

Keywords:
DemyelinationLhermitte's signshock like sensation

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Area of Science:

  • Neurology
  • Clinical Neuroscience

Background:

  • Lhermitte's sign is characterized by an electric shock-like sensation, typically experienced during neck flexion.
  • This neurological symptom is frequently observed in patients with multiple sclerosis (MS).

Purpose of the Study:

  • To review the history and etiopathophysiology of Lhermitte's sign.
  • To highlight the limited research available and the need for further investigation into its diagnostic utility.

Main Methods:

  • Literature review of historical and contemporary studies on Lhermitte's sign.
  • Analysis of pathophysiological mechanisms, including demyelination and hyperexcitability.

Main Results:

  • Lhermitte's sign, named after Jean Lhermitte, is described as a transient, electric shock-like sensation radiating down the spine and limbs upon neck flexion.
  • Primary pathophysiological mechanisms include demyelination and neuronal hyperexcitability, though other conditions like transverse myelitis and trauma can also precipitate the sign.
  • The review underscores a scarcity of research, indicating a need to establish the sign's sensitivity and specificity.

Conclusions:

  • Lhermitte's sign is a significant clinical indicator, particularly in the context of multiple sclerosis.
  • Further research is crucial to fully understand its diagnostic value and pathophysiological underpinnings.