Immediate Transition from a Petit Mal Absence into a Grand Mal Seizure
作者:
E. Niedermeyer,
期刊:
European Neurology
(Karger Available online 1976)
卷期:
Volume 14,
issue 1
页码: 11-16
ISSN:0014-3022
年代: 1976
DOI:10.1159/000114721
出版商: S. Karger AG
关键词: Petit mal absence;Grand mal;Aura (initiation) of a grand mal;Petit mal status;Common generalized epilepsy
数据来源: Karger
摘要:
Petit mal absences in childhood are often followed by grand mal seizures in adolescence and a coexistence of both types of seizures is not uncommon at all. It is noteworthy, however, that such a coexistence does not imply immediate transition from one type of seizure into the other one. Hence, a grand mal attack may be preceded by all sorts of focal seizures, psychomotor automatisms or bilateral-synchronous myoclonus but immediately preceding petit mal (with generalized spike-wave discharges) is probably extremely rare.The presented case is characterized by unusually late onset of petit mal and grand mal seizures at age 32 and, following a mild head injury, a few episodes of petit mal status (ictal stupor) at age 52. At that time, a series of petit mal absences and eventually a smooth transition from petit mal to grand mal could be recorded. Uncommon frequency characteristics (especially some interspersed spiking at a rate of 9–15/sec) were found at the onset of the ictal spike-wave activity during the petit mal absences. This is regarded as the expression of failing inhibitory mechanisms which generally prevent the immediate development of a grand mal out of a petit mal absenc
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