Hemifacial spasm is a nervous system disorder in which the muscles on one side of your face twitch involuntarily. Hemifacial spasm may be caused by a blood vessel touching a facial nerve, a facial nerve injury or a tumor, or it may not have a cause.
Sept. 19, 2014
- NINDS hemifacial spasm information page. National Institute of Neurological Disorders and Stroke. http://www.ninds.nih.gov/disorders/hemifacial_spasm/hemifacial_spasm.htm. Accessed Aug. 4, 2014.
- Hemifacial spasm. The Merck Manual for Health Care Professionals. http://www.merckmanuals.com/professional/neurologic_disorders/neuro-phthalmologic_and_cranial_nerve_disorders/hemifacial_spasm.html. Accessed Aug. 4, 2014.
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- Cook AJ. Decision Support System. Mayo Clinic, Rochester, Minn. July 9, 2014.