Unusual focal ictal pattern in children with eyelid myoclonia and absences.

Eyelid myoclonia is a type of epileptic seizure characterized by marked jerking of the eyelids, often associated with jerky upward deviation of the eyeballs. It can be triggered by eye closure. The ictal electroencephalographic pattern of eyelid myoclonia consists of generalized polyspike waves at 3 to 6 Hz. Eyelid myoclonia can be a component of the clinical seizures seen with idiopathic, symptomatic, or cryptogenic generalized epilepsy. The objective of this study was to describe the unusual focal ictal electroencephalogram features of two patients with developmental delay and eyelid myoclonia. To the best of our knowledge, this unique electroencephalogram finding was not previously described.