A clinical sign of canal paresis.

  title={A clinical sign of canal paresis.},
  author={G. Michael Halmagyi and Ian S. Curthoys},
  journal={Archives of neurology},
  volume={45 7},
Unilateral loss of horizontal semicircular canal function, termed canal paresis, is an important finding in dizzy patients. To our knowledge, apart from head-shaking nystagmus, no clinical sign of canal paresis has yet been described and the term derives from the characteristic finding on caloric tests: little or no nystagmus evoked by either hot or cold irrigation of the affected ear. We describe a simple and reliable clinical sign of total unilateral loss of horizontal semicircular canal… CONTINUE READING