Overview

Hemifacial spasm is a nervous system disorder in which the muscles on one side of your face twitch involuntarily. Hemifacial spasm is most often caused by a blood vessel touching a facial nerve, but it may be caused by a facial nerve injury or a tumor, or it may not have a cause.

Hemifacial spasm care at Mayo Clinic

May 05, 2018
References
  1. Daroff RB, et al. Parkinson disease and other movement disorders. In: Bradley's Neurology in Clinical Practice. 7th ed. Philadelphia, Pa.: Saunders Elsevier; 2016. https://www.clinicalkey.com. Accessed July 16, 2017.
  2. Chaudhry N, et al. Hemifacial spasm: The past, present and future. Journal of the Neurological Sciences. 2015;356:27.
  3. Hemifacial spasm. Merck Manual Professional Version. https://www.merckmanuals.com/professional/neurologic-disorders/neuro-ophthalmologic-and-cranial-nerve-disorders/hemifacial-spasm. Accessed July 16, 2017.
  4. Riggin EA. Allscripts EPSi. Mayo Clinic, Rochester, Minn. July 17, 2017.