myoclonic astatic epilepsy

my·o·clon·ic a·stat·ic ep·i·lep·sy

a petit mal variant characterized by atonic (drop attacks) and tonic or tonic-clonic attacks in neurologically disabled for example, hemiplegic, ataxic children with mental retardation; characterized in EEG by 2-second spike and wave discharges; usually progresses in spite of medication.

my·o·clon·ic a·stat·ic ep·i·lep·sy

(MAE) (mī'ō-klon'ik ā-stat'ik ep'i-lep'sē) A cryptogenic variant characterized by atonic (drop attacks) and tonic or tonic-clonic attacks in neurologically disabled children (e.g., patients with hemiplegia, ataxia) with mental retardation; usually progresses despite medication.