brief twitches that may increase periodically to culminate in more sustained tonic contractions, involving half the face, especially about the eye.
a benign hyperactivity of the muscles enervated by the facial nerve, including the stapedius muscle in the ear that may cause a clicking sound
a neuromuscular disorder that affects the muscles that are activated by the facial nerve
an irritation of the seventh cranial nerve (facial nerve) causing involuntary contraction of the muscles on one side of the face, also known as tic convulsif. Can sometimes cause pain behind the ear and loss of hearing.
Involuntary muscles twitches on one side of the face, typically caused by compression of the seventh (facial) cranial nerve by a neighboring blood vessel somewhere in the brain.
Hemifacial spasm or HFS is a neurological disorder in which blood vessels constrict the seventh cranial nerve and cause varying degrees of facial spasming, typically originating around the eye of the afflicted side of the face. Because the nerve directs muscular activities in a particular region, interference will create involuntary contractions. Severe forms of HFS will contort an entire side of the face.