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Causes Narcolepsy , idiopathic hypersomnia , circadian rhythm sleep disorder , sleep apnea , others Excessive daytime sleepiness ( EDS ) is characterized by persistent sleepiness and often a general lack of energy, even during the day after apparently adequate or even prolonged nighttime sleep.
It also appears in non-hypersomniac persons, for example after a night of insufficient sleep. [9] Fatigue and consumption of alcohol or hypnotics can cause sleep drunkenness as well. [9] It is also associated with irritability: people who get angry shortly before sleeping tend to experience sleep drunkenness. [9]
When a person struggles to fall asleep or stay asleep without any obvious cause, it is referred to as insomnia, [2] which is the most common sleep disorder. [3] Other sleep disorders include sleep apnea , narcolepsy , hypersomnia (excessive sleepiness at inappropriate times), sleeping sickness (disruption of the sleep cycle due to infection ...
One of these is called polysomnography, also known as a sleep study. Sleep studies get an idea of how well you sleep and can also help diagnose other sleep disorders like sleep apnea and narcolepsy.
Fatigue in a medical context is used to cover experiences of low energy that are not caused by normal life. [2] [3]A 2021 review proposed a definition for fatigue as a starting point for discussion: "A multi-dimensional phenomenon in which the biophysiological, cognitive, motivational and emotional state of the body is affected resulting in significant impairment of the individual's ability to ...
This means that the fatigue and sleep one lost as a result of, for example, staying awake all night, would be carried over to the following day. [ 21 ] [ 22 ] [ 23 ] Not getting enough sleep for a couple of days cumulatively builds up a deficiency and causes symptoms of sleep deprivation to appear.
Often people with DSPD manage only a few hours sleep per night during the working week, then compensate by sleeping until the afternoon on weekends. Sleeping late on weekends, and/or taking long naps during the day, may give people with DSPD relief from daytime sleepiness. [citation needed] People with DSPD can be called "night owls". They feel ...
Encephalitis lethargica is an atypical form of encephalitis.Also known as "sleeping sickness" or "sleepy sickness" (distinct from tsetse fly–transmitted sleeping sickness), it was first described in 1917 by neurologist Constantin von Economo [2] [3] and pathologist Jean-René Cruchet. [4]