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.
Mayo Clinic in Rochester, Minn., is ranked among the Best Hospitals for neurology and neurosurgery by U.S. News & World Report. Mayo Clinic in Scottsdale, Ariz., and Mayo Clinic in Jacksonville, Fla., are ranked high performing for neurology and neurosurgery by U.S. News & World Report.
Mike Wuest turned to the Web to learn about a bothersome facial tic, which led him to the answer at Mayo Clinic.