A rare, genetic, neurological disorder characterized by childhood to adolescent onset of progressive myoclonus (which becomes very severe and results in major motor impediment) associated with infrequent tonic-clonic seizures, and, occasionally, ataxia. Learning disability prior to seizure onset and mild cognitive decline may be associated.
Other condition names
Myoclonus epilepsy and ataxia due to potassium channel mutation
PME type 7
Progressive myoclonic epilepsy due to KV3.1 deficiency