Epilepsies, Myoclonic
| Definition: |
A clinically diverse group of epilepsy syndromes characterized either by myoclonic seizures or by myoclonus in association with other seizure types. Myoclonic epilepsy syndromes are divided into three subtypes based on etiology: familial, cryptogenic, and symptomatic (i.e., occurring secondary to known disease processes such as infections, hypoxic-ischemic injuries, trauma, etc.). |
| Also Called: |
Benign Infantile Myoclonic Epilepsy,Early Childhood Epilepsy, Myoclonic,Epilepsy, Myoclonic, Infantile,Epilepsy, Myoclonic, Infantile, Severe,Idiopathic Myoclonic Epilepsy,Myoclonic Absence Epilepsy,Myoclonic Astatic Epilepsy,Myoclonic Encephalopathy,Symptomatic Myoclonic Epilepsy |
| Previously Indexed: |
Epilepsy (1966-1976),Myoclonus (1966-1976) |
Epilepsies, Myoclonic Categories.
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Myoclonic Epilepsies, Progressive - A heterogeneous group of primarily familial disorders characterized by myoclonic seizures, tonic-clonic seizures, ataxia, progressive intellectual deterioration, and neuronal degeneration. These include LAFORA DISEASE; MERRF SYNDROME; NEURONAL CEROID-LIPOFUSCINOSIS; sialidosis (see MUCOLIPIDOSES), and UNVERRICHT-LUNDBORG SYNDROME. |
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Myoclonic Epilepsy, Juvenile - A disorder characterized by the onset of myoclonus in adolescence, a marked increase in the incidence of absence seizures (see EPILEPSY, ABSENCE), and generalized major motor seizures (see EPILEPSY, TONIC-CLONIC). The myoclonic episodes tend to occur shortly after awakening. Seizures tend to be aggravated by sleep deprivation and alcohol consumption. Hereditary and sporadic forms have been identified. (From Adams et al., Principles of Neurology, 6th ed, p323) |
Epilepsies, Myoclonic Definitions and Terms
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