Atypical Myoclonic Absences: Clinical, Electroencephalographic and Neuropsychological Aspects

Rossi, P.; Ricciotti, Andrea; Melideo, G.; Santucci, Margherita; Gobbi, Giuseppe

doi:10.1177/155005948801900210

Cited by 4 publications

(2 citation statements)

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“…The role of EEG in the diagnosis and classification of the epilepsies triggered by opening or closing the eyes, myoclonia of the eyelids and arms, or slow falls have also been described. In these cases, the EEG showed atypical features such as fast rhythms intermixed with, or preceding, the SW discharge (Giovanardi Rossi et al, 1988).…”

Section: Interictal Abnormalitiesmentioning

confidence: 99%

“…Sometimes, both the myoclonia and the tonic contraction can be asymmetric or even unilateral despite a generalized EEG pattern. In these cases, the EEG showed atypical features such as fast rhythms intermixed with, or preceding, the SW discharge (Giovanardi Rossi et al, 1988). Each myoclonia is followed by a brief EMG silent period which breaks the tonic contraction (Tassinari et al, 2008) (supplementary figure 4.68).…”

Section: Introductionmentioning

confidence: 99%

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The role of EEG in the diagnosis and classification of the epilepsy syndromes: a tool for clinical practice by the ILAE Neurophysiology Task Force (Part 2)

Koutroumanidis

Arzimanoglou

Caraballo

et al. 2017

Epileptic Disorders

105

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The concept of epilepsy syndromes, introduced in 1989, was defined as “clusters of signs and symptoms customarily occurring together”. Definition of epilepsy syndromes based on electro‐clinical features facilitated clinical practice and, whenever possible, clinical research in homogeneous groups of patients with epilepsies. Progress in the fields of neuroimaging and genetics made it rapidly clear that, although crucial, the electro‐clinical description of epilepsy syndromes was not sufficient to allow much needed development of targeted therapies and a better understanding of the underlying pathophysiological mechanisms of seizures. The 2017 ILAE position paper on Classification of the Epilepsies recognized that “as a critical tool for the practicing clinician, epilepsy classification must be relevant and dynamic to changes in thinking”. The concept of “epilepsy syndromes” evolved, incorporating issues related to aetiologies and comorbidities. A comprehensive update (and revision where necessary) of the EEG diagnostic criteria in the light of the 2017 revised terminology and concepts was deemed necessary. Part 2 covers the neonatal and paediatric syndromes in accordance with the age of onset. [Published with educational EEG plates at http://www.epilepticdisorders.com].

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Section: Interictal Abnormalitiesmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

The role of EEG in the diagnosis and classification of the epilepsy syndromes: a tool for clinical practice by the ILAE Neurophysiology Task Force (Part 2)

Koutroumanidis

Arzimanoglou

Caraballo

et al. 2017

Epileptic Disorders

105

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Myoclonus and epilepsies

Fejerman

1997

Indian J Pediatr

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The possible associations of myoclonic phenomenae, progressive or non-progressive encephalopathies and epileptic features are reviewed, with special emphasis on pediatric age. This leads to recognize the following five groups of conditions: (1) Myoclonus without encephalopathy and without epilepsy; (2) Encephalopathies with non-epileptic myoclonus; (3) Progressive encephalopathies presenting myoclonus seizures of epileptic syndromes (Progressive myoclonus epilepsies); (4) Epileptic encephalopathies with myoclonic seizures; (5) Myoclonic epilepsies. Within the first group, which also includes physiologic myoclonus, a more thorough description of "Benign sleep myoclonus of newborn" and "Benign myoclonus of early infancy" is given. Characteristics of group 2 are "Kinsbourne Syndrome" and certain types of "Hyperekplexia" which pose interesting differential diagnosis with stimulus-sensitive epilepsies. In group 3, the concept of progressive encephalopathies is stressed. The fourth group refers to severe epilepsies, mainly on infancy and childhood, which lead to mental retardation irrespective of their aetiology. Group 5 comprises the true myoclonic epilepsies, differentiating syndromes recognized as idiopathic--such as "Benign myoclonic epilepsy of infancy" and "Juvenile myoclonic epilepsy"--from those which are cryptogenic and carry a more cautious prognosis--as "Cryptogenic myoclonic and myoclonoastatic epilepsies" and "Severe myoclonic epilepsy of infancy". Other epileptic syndromes not usually considered as myoclonic epilepsies, but presenting sometimes as myoclonic seizures, are finally referred.

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Epilepsy with Myoclonic absences

Bureau

Tassinari

2005

Brain and Development

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Atypical Myoclonic Absences: Clinical, Electroencephalographic and Neuropsychological Aspects

Cited by 4 publications

References 1 publication

The role of EEG in the diagnosis and classification of the epilepsy syndromes: a tool for clinical practice by the ILAE Neurophysiology Task Force (Part 2)

The role of EEG in the diagnosis and classification of the epilepsy syndromes: a tool for clinical practice by the ILAE Neurophysiology Task Force (Part 2)

Myoclonus and epilepsies

Epilepsy with Myoclonic absences

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