Hemifacial Spasm

Hemifacial spasms are unilateral involuntary contractions involving muscles of facial expression. Incidence is less than 1 in 100,000 with prevalence rates higher in women than men, and an average age of onset in the fourth or fifth decade. The spasms last but a few minutes and come in bursts, often triggered by facial behaviors such as eating, speaking, or changes in head position. Typically, the first muscles involved are in the periorbital region, preceded by facial weakness, and within months spreading to ipsilateral facial muscles. These twitches continue in sleep. Blink reflexes are expressed normally. Hemifacial spasms occur when the facial nerve is compressed at the root entry zone, usually by the anterior or posterior inferior cerebellar or vertebral artery. Treatment of choice is botulinum toxin injections, but clonazepam is also prescribed (Sathornsumetee and Stacy in press). [Video Segment 29]

Was this article helpful?

0 0
Do Not Panic

Do Not Panic

This guide Don't Panic has tips and additional information on what you should do when you are experiencing an anxiety or panic attack. With so much going on in the world today with taking care of your family, working full time, dealing with office politics and other things, you could experience a serious meltdown. All of these things could at one point cause you to stress out and snap.

Get My Free Ebook


Post a comment