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

By means of parental questionnaires, sleep disturbances were assessed in 79 schoolchildren with epilepsy (mean age 10.12, range 5-16 years) for comparisons with 73 healthy control children matched for gender and to within a maximum of 6 months of age. The daytime behaviour of the children with epilepsy was also assessed by questionnaire. The children with epilepsy were considered representative of such children under general paediatric care. Sleep disturbance was classified into five basic types (poor quality sleep, anxieties about sleep, disturbances during sleep, symptoms of disordered breathing during sleep and short duration sleep) and the behaviour questionnaire provided scores on five factors (conduct problems, hyperactivity, attention problems, anxiety and physical complaints). Compared with normal controls children with epilepsy showed much higher rates of sleep disorders, particularly poor quality sleep and anxieties about sleep. In children aged 5-11 years associations were found between disturbed daytime behaviour and sleep problems, particularly poor quality sleep. There was also a significant association between seizure frequency and anxieties about sleeping. This study highlights the potentially serious psychological and other developmental implications of persistent sleep disturbance to children with epilepsy, and the need for further research on specific types of epilepsy with careful identification of the nature of both sleep disturbance and related psychological dysfunction.
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PMID:Sleep disorders and their relationship to psychological disturbance in children with epilepsy. 946 76

Sleepiness, a common complaint of epilepsy patients, is frequently attributed to antiepileptic medications. To determine predictors of subjective sleepiness in epilepsy patients, we gave self-administered, validated surveys of sleepiness [Epworth sleepiness scale (our major outcome measure)] and sleep apnea [sleep apnea scale of the sleep disorders questionnaire (SA/SDQ)] to 158 epilepsy patients and 68 neurology patients without epilepsy (controls). An elevated Epworth score (>10) was more likely in epilepsy patients compared to controls after controlling for age and gender (p < 0.05). When Epworth scores were adjusted for SA/SDQ scores and restless legs symptoms (RLS), however, epilepsy patients showed only a nonsignificant trend toward elevated Epworth scores compared to controls (p = 0.08). SA/SDQ scores (p < 0.005) and RLS (p < 0.007) were significant predictors of elevated Epworth score in both epilepsy patients and controls. Among the epilepsy patients, the number or type of antiepileptic medication, seizure frequency, epilepsy syndrome (partial vs. generalized), and the presence of sleep-related seizures were not significant predictors (p > 0.10) of elevated Epworth score. Before attributing sleepiness in epilepsy patients to antiepileptic medications or uncontrolled seizures, clinicians should consider the possibility of a coexisting sleep disorder.
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PMID:Predictors of sleepiness in epilepsy patients. 949 19

REM sleep behaviour disorder (RSBD) is a recently described parasomnia characterised by a history of excessive nocturnal motor activity and absence of muscle atonia during REM sleep. Only limited literature is available on this condition. The exact prevalence is unclear, but recent studies suggest it might not be an uncommon condition. The elderly are more often affected and there is a male preponderance. While transient RSBD can be seen after taking certain drugs or during drug withdrawal, the chronic type is usually idiopathic or associated with an underlying degenerative neurological condition. It can result in considerable distress and/or serious injury to the patients or their bed partners. Differential diagnoses include sleep-walking, night terrors, nightmares, nocturnal seizures, obstructive sleep apnoea, post-traumatic stress disorder, dissociative states and nocturnal confusional states. The dramatic response to clonazepam highlights the importance of recognition and appropriate treatment of this sleep disorder.
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PMID:REM sleep behaviour disorder: an overview. 953 85

Making a correct diagnosis in patients presenting with attack disorders is important. The clinical features of autosomal dominant nocturnal frontal lobe epilepsy and concussive seizures are reviewed. Recent work on the diagnosis and investigation of psychogenic non-epileptic attacks, drop attacks, falls, syncope and sleep disorders is discussed.
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PMID:Differential diagnosis of sleep disorders, non-epileptic attacks and epileptic seizures. 955 Dec 94

The ontogenetic framework onto which a child's sleep is constructed undergoes significant developmental alterations during early life. Sleep state behaviors, in large part, reflect continuities from fetal through neonatal time periods. Major changes in sleep organization subsequently occur throughout infancy. Maturational expressions of sleep behaviors must be understood by the pediatric neurologist before specific physiologic phenomena can be assessed as transient sleep disturbances or clinically relevant sleep disorders. The first part of this two-part review article focuses on the major aspects of developmental sleep physiology in the first few months of life. Recognition of age-specific electroencephalographic/polysomnographic patterns will facilitate the child neurologist's evaluation of the newborn with suspected seizures and interictal encephalopathies, as well as the prediction of neurologic sequelae.
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PMID:Understanding sleep ontogeny to assess brain dysfunction in neonates and infants. 979 51

Gamma-hydroxybutyrate (GHB), a compound found in the mammalian brain, meets many criteria of a neurotransmitter. Experimentally, GHB has been used as a model for petit mal epilepsy; clinically it has been used as a general anaesthetic, to treat certain sleep disorders and alcoholism. Lately GHB has been abused for its euphoric, sedative and anabolic effects. Coma and seizures following abuse of GHB have been reported, but dependency has received little attention. Adverse effects of GHB include seizure activity and a withdrawal syndrome characterised by insomnia, anxiety and tremor. The present paper reviews the neuropharmacology, potential therapeutic uses and acute adverse effects of GHB, together with a presentation of three cases.
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PMID:[Gamma-hydroxybutyrate--an endogenous substance and an intoxicant]. 988 13

Obstructive sleep apnoea was first brought to prominence by Henri Gastaut, a French epileptologist. Since that time the interface between epilepsy and sleep disorders has received less attention than might be justified, recognizing that sleep deprivation is a poignant provocateur for seizures. Sleep deprivation is often used as a diagnostic procedure during electroencephalography (EEG) when waking EEG has failed to demonstrate abnormality. Patients referred to an outpatient neurological clinic for evaluation of possible seizures in whom sleep disorder was suspected, either due to snoring during the EEG or based on history, were evaluated with all-night diagnostic polysomnography (PSG) and appropriate intervention administered as indicated. Patient and seizure demography, sleep disorder and response to therapy were reviewed and the interface explored. Fifty patients aged between 10 and 83 years underwent PSG. Approximately half were diagnosed with epilepsy and almost three-quarters had sleep disorders sufficiently intrusive to require therapy (either continuous positive air pressure (CPAP) or medication). With co-existence of epilepsy and sleep disorders, proper management of sleep disorders provided significant benefit for seizure control. Snoring during EEG recordings could alert to the possibility of a sleep disorder even with epilepsy diagnosed. Where both epilepsy and sleep disorder coexist appropriate management of the sleep disorder improves control of the epilepsy.
Seizure 1999 Apr
PMID:Interface of epilepsy and sleep disorders. 1022 1

Oral melatonin (MLT) has been used by our Vancouver research group in the treatment of paediatric sleep disorders since 1991; slightly over 200 children, mainly with multiple disabilities, who frequently had seizures, have been treated. Three children with markedly delayed sleep onset due to recurring myoclonus were also referred for MLT treatment: two had non-epileptic, and one had epileptic and non-epileptic myoclonus. Low doses of oral MLT (3 to 5 mg) unexpectedly abolished their myoclonus and allowed them to sleep. There were no adverse effects. It appears that certain types of myoclonus, which might be resistant to conventional anticonvulsant medications, may respond to MLT but the mechanism of action is unclear. Further research on this novel treatment is urgently needed.
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PMID:Melatonin treatment of non-epileptic myoclonus in children. 1035 9

Recent advances in molecular biology, biochemistry, cell biology and behavioral pharmacology together with the development of more selective ligands to the various adenosine receptors have increased our understanding of the functioning of central adenosine A(2A) receptors. The A(2A) receptor is one of four adenosine receptors found in the brain. Its expression is highest in striatum, nucleus accumbens and olfactory tubercles, although it also occurs in neurons and microglia in most other brain regions. The receptor has seven transmembrane domains and couples via Gs to adenyl cyclase stimulation. Antagonistic interactions between A(2A) receptors and dopamine D(2) receptors have been described, as stimulation of the A(2A) receptor leads to a reduction in the affinity of D(2) receptors for D(2) receptor agonists. The A(2A) receptor is thought to play a role in a number of physiological responses and pathological conditions. Indeed, A(2A) receptor antagonists may be useful for the treatment of acute and chronic neurodegenerative disorders such as cerebral ischemia or Parkinson's disease. A(2A) receptor agonists may treat certain types of seizures or sleep disorders. This review discusses the characteristics, distribution, pharmacochemical properties and regulation of central A(2A) receptors, as well as A(2A) receptor-mediated behavioural responses and their potential role in various neuropsychiatric disorders.
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PMID:Central adenosine A(2A) receptors: an overview. 1061 96

The intensive study of seizures via serial 24-hour EEG-video monitoring has allowed enhanced observation of sleep patterns among epilepsy patients and has revealed that disturbed rest is common in this population. Previous work has shown that sleep deprivation of any type can exacerbate seizure activity, leading to speculation that the intrinsically poor sleep in these patients may serve as a threshold-lowering factor, and that this factor might be partially reversed by effective antiepileptic drugs (AEDs). However, to better understand this interaction, it is necessary to know whether the sleep disorder of epilepsy is caused by repetitive ictal events or whether it is part of a process that causes epilepsy to emerge in the first place. In addition, to separate and analyze the sleep effects of AEDs, one must compare studies of normal controls, which have only rarely been accomplished, with studies of drug-free patients, which are difficult to achieve. As little as is known about the detailed effects of AEDs on sleep architecture, even less is known about the mechanisms by which AEDs might cause such effects. Nevertheless, there is great potential for those undertaking such work, due to the wealth of basic science accumulating in the field of sleep mechanisms and the prodigious amount of information already amassed in the area of anticonvulsant mechanisms.
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PMID:Effect of anticonvulsants on sleep. 1071 80


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