Hemifacial spasm (HS) causes muscles to contract on one side of the face. A person cannot control the spasm.
HS does not always have a cause. It may be due to:
- A blood vessel pressing on the facial nerve
- Facial nerve injury
Copyright © Nucleus Medical Media, Inc.http://services.epnet.com/getimage.aspx?imageiid=798979893DSAE9258e_40018_1.jpgMuscles of the FaceNULLjpgMuscles of the FaceNULL\\hgfiler1\intellect\images\3DSAE9258e_40018_1.jpgNULL130NULL2010-05-20400300325225Copyright © Nucleus Medical Media, Inc.
HS is more common in older women. It is also more common in people who are Asian.
Problems may be:
- Twitching of the eyelid muscle that causes the eye to close
- A mouth that is pulled to one side
- Spasms of all the muscles on one side of the face
The doctor will ask about symptoms and health history. A physical exam will be done. It will focus on the face.
Pictures of the head may be taken. This can be done with:
Nerve and muscle function may be tested. This can be done with electromyography (EMG).
The goal of treatment is to ease pressure on the nerve. This can be done with:
- Injections of botulinum toxin (Botox) to temporarily stop spasms
- Antiseizure medicine
Some people may need surgery to reposition a blood vessel that is pressing on a nerve.
There are no known guidelines to prevent this problem.
- Hemifacial spasm information page. National Institute of Neurological Disorders and Stroke website. Available at: https://www.ninds.nih.gov/health-information/disorders/hemifacial-spasm.
- OnabotulinumtoxinA. EBSCO DynaMed website. Available at: https://www.dynamed.com/drug-monograph/onabotulinumtoxina.
- Teresa Briedwell, PT, DPT, OCS, CSCS
(C) Copyright 2023 EBSCO Information Services
This content is reviewed regularly and is updated when new and relevant evidence is made available. This information is neither intended nor implied to be a substitute for professional medical advice. Always seek the advice of your physician or other qualified health provider prior to starting any new treatment or with questions regarding a medical condition.
To send comments or feedback to our Editorial Team regarding the content please email us at email@example.com.