Bell's phenomenon

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Sir Charles Bell
Sir Charles Bell

Bell's phenomenon is a medical sign in patients with peripheral facial paralysis that is characterized by the failure of the eyelid on the paralyzed side to close. This allows observers to notice an upward movement of the eye on the same side, when an attempt is made to close the eyes. The upward movement of the eye is present in the majority of the population, and is a defensive mechanism[1][2]. The phenomenon is named after the Scottish anatomist, surgeon, and physiologist Charles Bell.

  1. ^ Bell's phenomenon should not be regarded as pathognomonic sign
  2. ^ Bell's phenomenon should not be regarded as pathognomonic sign. BMJ. 2001 October 20; 323(7318): 935

http://www.pubmedcentral.nih.gov/articlerender.fcgi?artid=1121451

Bell's phenomenon should not be regarded as pathognomonic sign. BMJ. 2001 October 20; 323(7318): 935

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