Progressive myoclonus epilepsy in young adults with neuropathologic features of Alzheimer's disease

Progressive myoclonus epilepsy (PME) may develop in adult life. We present two patients with PME appearing around the age of 30 years in whom the disorder represented a manifestation of Alzheimer9s disease. This diagnosis must be considered in addition to possible Kufs9 disease or myoclonic epilepsy with ragged red fibers (MERRF) when PME develops in young adults.