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According to Dr. Eric Sklar, board-certified neurologist and sleep medicine doctor, insomnia is the inability to get to sleep or stay asleep. It can also be waking up at night or, in the morning ...
It can be caused by another disorder, by changes in the sleep environment, by the timing of sleep, severe depression, or by stress. Its consequences – sleepiness and impaired psychomotor performance – are similar to those of sleep deprivation. [102] Acute insomnia is the inability to consistently sleep well for a period of less than a month ...
Sleep deprivation is used to create a different schedule pattern that is beyond a typical 24-hour day. Sleep deprivation is pivotal in training games such as "Keep in Memory" exercises, where personnel practice memorizing everything they can while under intense stress physically and mentally and being able to describe in as much detail as they ...
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. EDS can be considered as a broad condition encompassing several sleep disorders where increased sleep is a symptom, or as a symptom of another ...
Occasional noncircadian days may occur (i.e., sleep is "skipped" for an entire day and night plus some portion of the following day), followed by a sleep period lasting 12 to 18 hours. The symptoms do not meet the criteria for any other sleep disorder causing inability to initiate sleep or excessive sleepiness.
But here's a twist you might not have considered: While we often think of the winter months as a time for more sleep, the shorter days might actually be messing with our sleep cycles in unexpected ...
Narcolepsy: A chronic neurological disorder (or dyssomnia), which is caused by the brain's inability to control sleep and wakefulness. [94] Idiopathic hypersomnia: A chronic neurological disease similar to narcolepsy, in which there is an increased amount of fatigue and sleep during the day. Patients who have idiopathic hypersomnia cannot ...
As the seasons change from summer to fall, so can your sleep habits, sleep specialist and clinical psychologist Michael Breus, Ph.D., said in a Sept. 23 segment on TODAY.
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related to: inability to sleep for days is considered a change in life