Sleep disorder

About: Sleep disorder is a research topic. Over the lifetime, 19380 publications have been published within this topic receiving 884281 citations. The topic is also known as: somnipathy & non-organic sleep disorder.

Sleep, sleepiness, and alcohol use.

Abstract: The study of alcohol’s effects on sleep dates back to the late 1930s. Since then, an extensive literature has described alcohol’s effects on the sleep of healthy, nonalcoholic people. For example, studies found that in nonalcoholics who occasionally use alcohol, both high and low doses of alcohol initially improve sleep, although high alcohol doses can result in sleep disturbances during the second half of the nocturnal sleep period. Furthermore, people can rapidly develop tolerance to the sedative effects of alcohol. Researchers have investigated the interactive effects of alcohol with other determinants of daytime sleepiness. Such studies indicate that alcohol interacts with sleep deprivation and sleep restriction to exacerbate daytime sleepiness and alcohol-induced performance impairments. Alcohol’s effects on other physiological functions during sleep have yet to be documented thoroughly and unequivocally.

An investigation into sleep characteristics of children with autism and Asperger's Disorder.

Abstract: Objective: The aim of the study was to investigate the specificity of sleep problems in children with autism and further explore the currently unclear association between sleep problems and daytime behaviour. Methodology: The Pervasive Developmental Disorder (PDD) group consisted of 31 children with autism and 7 children with Asperger’s Disorder ranging in age from 44 to 152 months. The control group consisted of 36 children ranging in age from 63 to 171 months. The children were matched on age and gender, and group-matched on IQ level. A sleep diary was completed by parents over a 2-week period, in addition to several behaviour questionnaires. Results: Results showed that children in the PDD group exhibited qualitatively and quantitatively different sleep patterns to nonautistic control children. Conclusions: The findings were discussed in light of current literature concerning circadian rhythm dysfunction, social difficulties, and abnormal melatonin levels in children with autism.

Alpha sleep characteristics in fibromyalgia

Abstract: Objective To characterize the patterns of alpha electroencephalographic sleep and their associations with pain and sleep in patients with fibromyalgia. Methods Pain and sleep symptoms of 40 female patients with fibromyalgia and 43 healthy control subjects were studied before and after overnight polysomnography. Blinded analyses of alpha activity in non–rapid eye movement (non-REM) sleep were performed using time domain, frequency domain, and visual analysis techniques. Results Three distinct patterns of alpha sleep activity were detected in fibromyalgia: phasic alpha (simultaneous with delta activity) in 50% of patients, tonic alpha (continuous throughout non-REM sleep) in 20% of patients, and low alpha activity in the remaining 30% of patients. Low alpha activity was exhibited by 83.7% of control subjects (P < 0.01). All fibromyalgia patients who displayed phasic alpha sleep, activity reported worsening of pain after sleep, compared with 58.3% of patients with low alpha activity (P < 0.01) and 25.0% of patients with tonic alpha activity (P < 0.01). Postsleep increase in the number of tender points occurred in 90.0% of patients with phasic alpha activity, 41.7% of patients with low alpha activity, and 25.0% of patients with tonic alpha activity (P < 0.01). Self ratings of poor sleep were reported by all patients with phasic alpha activity, 58.3% of patients with low alpha activity (P < 0.01), and 12.5% of patients with tonic alpha activity (P < 0.01). Patients with phasic alpha activity reported longer duration of pain than patients in other subgroups (P < 0.01). Additionally, patients with phasic alpha sleep activity exhibited less total sleep time than patients in other subgroups (P < 0.05), as well as lower sleep efficiency (P < 0.05) and less slow wave sleep (P < 0.05) than patients with a tonic alpha sleep pattern. Conclusion Alpha intrusion during sleep can be of different patterns. Phasic alpha sleep activity was the pattern that correlated better with clinical manifestations of fibromyalgia.

Insomnia, Trouble Sleeping, and Complementary and Alternative Medicine: Analysis of the 2002 National Health Interview Survey Data

Abstract: Background: Insomnia and other disorders that result in trouble sleeping are common in the United States and areoftenassociatedwithchronichealthconditions.Some individualswithinsomniaortroublesleepingusecomplementaryandalternativemedicine(CAM)therapiestotreat theircondition,buttheprevalenceofsuchuseandthemost common types of CAM therapies selected are not known. Methods: Prevalence of insomnia or trouble sleeping and of CAM use for treating such conditions was examined using the 2002 National Health Interview Survey. Logistic regression was used to examine associations between insomnia or trouble sleeping, comorbid conditions, and use of CAM treatments. Results: The 12-month prevalence rate of insomnia or trouble sleeping was 17.4%. There was a strong positive association between adults who reported having insomnia or trouble sleeping and adults who reported 4 of 5 common conditions: obesity (adjusted odds ratio [OR], 1.15; 99% confidence interval [CI], 1.01-1.31), hypertension (OR, 1.32; 99% CI, 1.16-1.51), congestive heart failure (OR, 2.24; 99% CI, 1.60-3.14), and anxiety or depression (OR, 5.64; 99% CI, 5.07-6.29). Of those with insomnia or trouble sleeping, 4.5% used some form of CAM therapy to treat their condition. Conclusions: According to the National Health Interview Survey analysis, over 1.6 million civilian, noninstitutionalized adult US citizens use CAM to treat insomnia or trouble sleeping. The details of this analysis will serve as a guide for future research on CAM therapies for sleep disorders.