Protracted epileptiform encephalopathy: an unusual form of partial complex status epilepticus.

An 11-year-old previously healthy boy had an abrupt onset of partial complex, focal, multifocal, and generalized seizures, with interictal expressive aphasia, extreme emotional lability, agitation, and complex visual and auditory hallucinations. EEGs showed frequent runs of rhythmic high-voltage delta over the right and subsequently over the right and left temporal and frontal regions. All other studies were negative (repeated computed tomography, spinal fluids, viral titers, and cultures). Nadir during the second month showed virtual unresponsiveness, prolonged rhythmic motor and apneic seizures, total anorexia, and sleeplessness. Remission of the electrical and clinical seizure activity and a gradual improvement through a state of agitation and emotional lability occurred during the third and fourth months. One year later he was entirely normal. Compared with the other previously documented cases of prolonged partial complex status, this case is notable for its florid and severe symptomatology, long duration, and final benign outcome.