What are the symptoms of Hemifacial Spasm?

By  ,  National Institute of Health
Oct 05, 2012
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The first symptom is usually an intermittent twitching of the eyelid muscle that can lead to forced closure of the eye. The spasm may then gradually spread to involve the muscles of the lower face, which may cause the mouth to be pulled to one side. Eventually the spasms involve all of the muscles on one side of the face almost continuously. The condition may be caused by a facial nerve injury, or a tumor, or it may have no apparent cause. Rarely, doctors see individuals with spasm on both sides of the face.  Most often hemifacial spasm is caused by a blood vessel pressing on the facial nerve at the place where it exits the brainstem.

 

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