Technical Terms
• EDS.
•Hypersomnia/Hypersomnolence.
• Fatigue:
• Clinical fatigue incorporates 3 components,
1. Inability to initiate activity (perception of generalized
weakness, in the absence of objective findings);
2. Reduced capacity to maintain activity (easy fatigability); and
3. Difficulty with concentration, memory, and emotional
stability (mental fatigue)
4.
EPIDEMIOLOGY
• EDS isreported by 10 to 25 percent of the general population.
• EDS has been reported to decrease with age in some studies, and to increase with age in others.2,3
• Most studies show an equal sex ratio or a female predominance of up to two to one.4
• The strongest independent risk factors for incident EDS were:
1. Insomnia and
2. Smoking;
3. others included anxiety and/or depression, somatic symptoms, snoring,
and obesity.
4. Young TB. Epidemiology of daytime sleepiness: definitions, symptomatology, and prevalence. J Clin Psychiatry 2004; 65 Suppl 16:12
5. Hublin C, Kaprio J, Partinen M, et al. Daytime sleepiness in an adult, Finnish population. J Intern Med 1996; 239:417.
6. Baldwin CM, Kapur VK, Holberg CJ, et al. Associations between gender and measures of daytime somnolence in the Sleep Heart Health Study. Sleep 2004; 27:305.
7. Hara C, Lopes Rocha F, Lima-Costa MF. Prevalence of excessive daytime sleepiness and associated factors in a Brazilian community: the Bambuí study. Sleep Med 2004; 5:31.
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