Blepharospasm is an abnormal, involuntary blinking or spasm of the eyelids. Blepharospasm is associated with an abnormal function of the basal ganglion from an unknown cause. The basal ganglion is the part of the brain responsible for controlling the muscles.
For all of the NEI information on this topic, please visit the following webpage:
For more information from other health sites, please visit the following webpages:
National Institute of Neurological Disorders and Stroke, NINDS Benign Essential Blepharospam Information Page
MedlinePlus, Eyelid twitch
Genetics Home Reference, Benign essential blepharospasm
Benign Essential Blepharospasm Research Foundation, Blepharospasm