Blepharospasm
Blepharospasm is a type of dystonia (that is, a disease in which your muscles contract involuntarily) causing uncontrollable repetitive or twisting movements. Blepharospasm affects the eyes, and is also known as eye dystonia. It is uncontrollable and often causes painful muscle contractions around the eye.
Blepharospasm is classified as a focal dystonia, meaning that it affects only one region of the body, which is true for majority of the cases. However, in a few rare cases, it does spread to other regions of your body and in that case it is classified as a multifocal or segmental dystonia. The best documented of these is Meige's syndrome, that is, eye dystonia, combined with mouth, jaw or tongue dystonia. This disease usually affects people between the ages of forty and seventy but it does sometimes affect younger people as well. It is also more likely to affect women than men.
