Hemifacial spasm is a disabling movement disorder caused by vascular compression of the facial nerve at its root exit zone, leading to involuntary unilateral contractions of facial muscles.

Hemifacial spasms happen when a blood vessel puts excess pressure on a facial nerve, per the National Institute of Neurological Disorders and Stroke (NINDS). They can also be caused by external nerve ...

DEAR ABBY: I have hemifacial spasm (HFS), a relatively rare disorder characterized by random and uncontrollable spasms on one side of the face. HFS can sometimes be alleviated through surgery and/or ...

It may start as something we’re all familiar with: tiny spasms around your eyelid. “When you’re tired or stressed and you get fluttering under your eye or eyelid and it’s really annoying,” says Sharon ...