title: Late onset of myoclonic epilepsy of Janz.
abstract: Myoclonic epilepsy of Janz is an essentially benign disorder with excellent response to valproic acid. The onset of myoclonic seizures in a patient at the age of 47 years, with normal mental status and a normal neurological examination, is reported. The electroencephalogram showed typical 3- to 5-Hz polyspike and wave complexes, some associated with myoclonic jerks but without loss of consciousness. The patient responded well to divalproex sodium, which controlled her seizures. A discussion of the condition and a review of the literature are included.
mesh_terms: D000367:Age Factors; D004569:Electroencephalography; D004831:Epilepsies, Myoclonic / Q000175:diagnosis*; D005260:Female; D006801:Humans; D008875:Middle Aged