(redirected from Excessive sleeping)
Also found in: Dictionary, Thesaurus, Medical.
Related to Excessive sleeping: hypersomnia, narcolepsy


Excessive sleepiness.
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.
The following article is from The Great Soviet Encyclopedia (1979). It might be outdated or ideologically biased.



increased sleepiness. A distinction is drawn between paroxysmal and permanent types of hypersomnia. Characteristic of paroxysmal hypersomnia are overwhelming attacks of sleep during the day, under unfavorable conditions lasting from several minutes (narcolepsy) to several days (periodic sleeping sickness). In cases of narcolepsy there are frequent disturbances of nocturnal sleep and attacks of sudden muscular weakness caused by various emotions (catalepsy). Permanent hypersomnia, which is found in cases of neuroinfections, disruptions of cerebral blood circulation, and tumor processes, is manifested by constant sleepiness and falling asleep under natural, ordinary conditions. In contrast to patients with certain forms of paroxysmal hypersomnia, persons suffering from permanent hypersomnia are easily awakened. However, left to themselves, they quickly fall asleep again. The basis of all types of hypersomnia is disturbance of the functioning of the brain’s “wake-sleep” system. In addition to decreased wakefulness, disturbance of the regulation of the phases of “rapid desynchronized” and “slow synchronized” sleep plays an important role.

Treatment depends on the form of hypersomnia. In cases of narcolepsy, stimulators of the nervous system are used. In cases of periodic sleeping sickness and similar forms of hypersomnia, treatment includes general restorative therapy and checkup of respiratory and blood circulation functions. Treatment of permanent hypersomnia involves removal of the causes.


The Great Soviet Encyclopedia, 3rd Edition (1970-1979). © 2010 The Gale Group, Inc. All rights reserved.
Mentioned in ?
References in periodicals archive ?
At its most severe, Seasonal Affective Disorder (SAD) affects two per cent of the population in Northern Europe, and its symptoms include mood swings, binge eating and excessive sleeping.
Signs that your child is not adjusting well include: extremes in emotion or mood swings; excessive sleeping, screaming, or crying; and difficulties with food or bathroom habits.
But there's good news for those who struggle to get up in the morning and to stay awake during the day: Excessive sleeping can be treated.
The depressed episodes result in sadness, lethargy, suicidal thinking, excessive sleeping and appetite disturbance.
The sleep problems those children reported included daytime sleepiness, nightmares, excessive sleeping, and difficulty sleeping, the researchers reported in a poster session at the annual meeting of the Associated Professional Sleep Societies.
Provigil was approved in 1998 by the FDA to treat narcolepsy, a central nervous system disorder that causes excessive sleeping. It is not clear whether Cephalon, Provigil's manufacturer, will ask the FDA to approve the drug for treatment of MS.
He said in April 2017, a federal agency of the United States Department of Health and Human Services, the Food and Drug Administration (FDA), had also warned against the use of codeine and tramadol for children and by nursing mothers because of possible harm to their infants, which includes excessive sleeping, difficulty breastfeeding and serious breathing problems that could result in death.