Hemifacial spasm (HS) causes muscles to contract on one side of the face. They happen without your control.
HS doesn't always have a cause. It may be due to:
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HS is more common in older women.
You may have:
Your doctor will ask about your symptoms and health history. You may have:
Pictures of your body may be taken This can be done with:
Talk with your doctor about the best plan for you.
Your doctor may have you take antiseizure medicines. They may help to ease symptoms.
Botulinum toxinmay be injected into the muscles. It can stop eyelid spasm for many months. This must be repeated, usually many times a year. This is the main way to treat HS.
You may have surgery to reposition the blood vessel away from the nerve. This is helps people with HS caused by a blood vessel pressing on the facial nerve.
HS can't be prevented.
National Institute of Neurological Disorders and Stroke
National Organization for Rare Disorders
Canadian Movement Disorder Group
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Defazio G, Martino D, Aniello MS, et al. Influence of age on the association between primary hemifacial spasm and arterial hypertension. J Neurol Neurosurg Psychiatry. 2003;74(7):979-981.
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NINDS hemifacial spasm information page. National Institute of Neurological Disorders and Stroke website. Available at: https://www.ninds.nih.gov/disorders/all-disorders/hemifacial-spasm-information-page. Accessed June 20, 2018.
Last reviewed June 2018 by EBSCO Medical Review Board Rimas Lukas, MD Last Updated: 6/19/2018