Nonepileptic seizures.

The widespread use of video-electroencephalogram monitoring has dramatically increased our recognition of the high prevalence and diversity of nonepileptic seizures. Nonepileptic seizures stand squarely in the interface between psychiatry and neurology, an area that has been both claimed and denied by both sides. Collaborative exploration of this border zone has provided new insights into a disorder that may be as ancient as epilepsy.