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Query: UMLS:C0036572 (seizures)
 80,221 document(s) hit in 31,850,051 MEDLINE articles (0.00 seconds)

Six cases of epileptic children are reported, in whom anticonvulsant therapy, aggravated rather than controlled the seizures or induced minor seizures. This was caused by excessive polytherapy in one case and by the use of the inappropriate drug (for that type of epilepsy) in four other cases. In the sixth case, the appropriate anticonvulsant was used, but it induced multiple astatic-myoclonic seizures. This phenomenon of drug-induced seizures is apt to occur particularly in certain types of childhood epilepsy that are refractory to therapy and are accompanied by slow spike-wave discharges in the EEG, such as the Lennox-Gastaut syndrome.
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PMID:Seizures induced or aggravated by anticonvulsants. 378 Jun 7

Out of over 100 children with the Lennox-Gastaut syndrome observed in the Outpatient Clinic and Department of Paediatric Neurology, Children's Health Center the authors present 6 cases in which the course of the disease was progressive and devastating. The main signs were astatic-myoclonic and generalized seizures, regression of psychomotor development, followed by mental regression, pareses of extremities, decortication symptoms and somatic cachexia. The authors suggest that the clinical course, the character of epileptic seizures very poor prognosis in certain children with the Lennox-Gastaut syndrome make the syndrome similar in its clinical aspects to subacute sclerosing panencephalitis and require careful differential diagnosis for excluding the latter disease.
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PMID:[Epilepsy with myoclonic-astatic attacks (Lennox-Gastaut syndrome) with particularly unfavorable course]. 393 Sep 80

A 10-year-old girl with a mass lesion in the left deep frontal lobe was reported. Clinically, seizures occurred at 3 years and 8 months and became intractable around the age of 5.5 years. EEG initially showed focal spikes on the left fronto-central area and later developed into diffuse slow spike and wave complexes (DSSW). Her seizures were clinically different from those in Lennox-Gastaut syndrome. After a left frontal lobectomy, her intractable seizures completely disappeared with marked EEG improvement and without any neurological deficit. Radiological findings before the operation suggested that the expanding effects extended to the deep temporal structures, adjacent to the frontal lobe. These structures, deep frontal and temporal lobes, both or either, were assumed to be involved in generating DSSW in this case.
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PMID:Effects of neurosurgical treatment on diffuse slow spike and wave complex: a case of left frontal mass lesion with diffuse slow spike and wave complex (DSSW). 393 70

The West syndrome and the Lennox-Gastaut syndrome are characterized by their onset in infancy and early childhood, intractable seizures occurring almost daily, severe psychomotor retardation, and poor prognosis. Among handicapped children, they offer the most serious problems in daily care at home or in institutions because of frequent attacks and marked retardation. A nationwide survey in Japan was performed to elucidate the natural history of these two syndromes.
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PMID:West syndrome and Lennox-Gastaut syndrome: a survey of natural history. 624 68

This report concerns 844 children with Down syndrome under 15 years of age. Of the 844 cases with Down syndrome, 1.4% have epilepsy at the present time. The types of seizures are as follows; infantile spasms in 4 cases (30.8%), generalized tonic-clonic convulsions in 6 (46.1%), Lennox-Gastaut syndrome in 1 (7.7%) and psychomotor seizure in 2 (15.4%). The onset of seizure was high in the first two years (73.7%). The occurrence of epilepsy in Down syndrome in childhood did not differ from that in the general population, but infantile spasms were prevalent in Down syndrome.
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PMID:Epilepsy in childhood Down syndrome. 632 19

26 adult epileptic patients with diffuse slow spikes and waves and start of seizures after the age of 6 years were analyzed. The seizure spectrum encompasses generalized and focal seizures. The occurrence of several types of seizures is the rule. Epileptic drop attacks are most characteristic. Atonic, tonic and myoclonic features may be present in this type of seizure. Neurological and mental deficits are common. Compared with Lennox-Gastaut syndrome of children, the degree of intellectual impairment is relatively mild. As to the etiology a primary and a secondary group can be distinguished. Genetic predisposition seems to play a crucial role in the primary group.
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PMID:Epilepsies with diffuse slow spikes and waves of late onset. 641 20

Twelve patients with perinatal anoxic encephalopathy, 1 with encephalitis, and 1 with Down's syndrome had startle epilepsy. Hemiparesis, startle-induced seizures involving the hemiparetic side, focal electroencephalographic abnormalities, and unilateral lesions evident on computed tomographic scan were found in 6 patients, all of whom responded favorably to carbamazepine. The remaining 8 patients had severe intellectual impairment, bilateral motor deficits, generalized startle-induced seizures, diffuse and lasting electroencephalographic abnormalities, and widespread cerebral lesions evident on computed tomographic scan. Of these, 2 patients with Lennox-Gastaut syndrome responded to clonazepam, 4 others responded to valproic acid, and 2 others, with predominantly focal hemispheric lesions, improved on a regimen of carbamazepine.
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PMID:Startle epilepsy: a clinical study. 646 64

From a group of 66 patients with the Lennox-Gastaut syndrome, 12 whose manifestations had started after the 6th year of life were selected for study. These patients were observed clinically and electroencephalographically for an average period of 2.5 years. We concluded that the late-onset syndrome can: occur after a long interval between diffuse encephalopathy and the first clinical manifestations, with or without previous alterations in psychomotor development; be associated from the onset with serious mental retardation; exhibit simple, complex and mixed seizures similar to those observed in the early form. These patients can also: suffer complex and mixed epileptic seizures previously unreported; paroxysmal interictal EEG abnormalities that overlap those of the early form; and spike-slow wave complexes in the EEG that can be actived by hyperpnea. Our results demonstrate that the incidence of LGS after 6 years of age does not necessarily imply a lower frequency of organic antecedents, or better neuropsychomotor development up to the onset of the syndrome or the presence of a higher rate of nonspecific seizures (generalized or partial seizures, and mainly those with elaborate symptomatology). The critical and encephalographic expression of the syndrome, which is secondary and starts after the 6th year of age, may depend at least in part on the age when diffuse encephalopathy started.
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PMID:Secondary late-onset Lennox-Gastaut syndrome: a critical view. 646 53

Sixteen subjects affected by Lennox-Gastaut syndrome (11 males and five females, ranging from 5 to 15 years of age [mean age, 9 years 11 months]) were followed for periods of 9 months to 5 years 9 months, and were studied during three to five prolonged hospitalizations for total periods of 2-9 months with a veiw to examining the distribution of epileptic seizures during four states of vigilance, evaluated from a behavioral point of view: sleep, drowsiness, inactive wakefulness, and active wakefulness. it was ascertained that the overall average of 406 seizures daily, directly observed, was distributed as follows: 26 (6.40%) during sleep; 128 (31.52%) during drowsiness; 219 (53.94%) during inactive wakefulness; and 33 (8.12%) during active wakefulness. The comparison between the incidence of seizures observed during active wakefulness and those observed during both drowsiness and inactive wakefulness was significant (p less than 0.001). The latter two states represent, in our study, the shortest period of the day (8 h as compared with the 16 h of sleep and active wakefulness), thus making the results of the comparison even more significant. The results of this study suggest the importance of a stimulating environment for children affected by Lennox-Gastaut syndrome, and they point out that an overdose of antiepileptic drugs, not uncommon in the treatment of this syndrome, may make seizures more frequent.
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PMID:Alertness and incidence of seizures in patients with Lennox-Gastaut syndrome. 670 46

Forty-three cases of absence seizure were studied from the viewpoint of prognosis. thirty-three had been seizure-free for at least one year until the time of follow-up. The remaining 10 cases were uncontrollable and their plasma levels of the drugs were measured. The following characteristics were more significantly found in the uncontrollable group: (1) late onset (14 years old or later) (2) preceding grand mal seizures (3) accompanying automatisms. The above three factors were found to be interrelated. (4) concomitant grand mal seizures of sleep or diffuse (other than awakening) type (5) psychological disturbances (low intelligence, circuitous character) and (6) chronological shift to the Lennox-Gastaut syndrome.
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PMID:Uncontrollable cases of absence. 678 Apr 35


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