brain, spinal cord, and nerve disorders
Hemifacial Spasm
Symptoms of Hemifacial Spasm
Muscles on one side of the face twitch involuntarily, usually beginning with the eyelid, then spreading to the cheek and mouth. Twitching may be intermittent at first but may become almost continuous. Hemifacial spasm is essentially painless but can be embarrassing and look like a seizure. 