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Signs
 
 

Tongue Fasciculations

 
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Overview

  • Look For

  • Spontaneous localised muscle contraction and relaxation. May be associated with dysarthria or dysphagia.
  • Causes of Tongue Fasciculations

  • Motor neuron disease
  • Hypoglossal (XII) nerve lesion - tumour, trauma, infarct, haemorrhage, demyelination, bulbar palsy
  • Interpretation

  • Unilateral fasciculations - suggestive of a lower motor neuron lesion, involving the hypoglossal nerve (XII) or medullary hypoglossal nucleus
  • Bilateral fasciculations - suggestive of motor neuron disease
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