OBJECT: It is generally accepted that hemifacial spasm (HFS) is caused by pulsatile vascular compression upon the facial nerve root exit zone. This 2-3 mm area, considered synonymous with the ...

Hemifacial spasm (HFS) is a neurological disorder manifested by twitching on one side of ... However, HFS is often attributable to an irritation or a compression of the facial nerve by a blood vessel ...