Somnolence

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Template:SignSymptom infobox | }} Somnolence (or "drowsiness", or "hypersomnia") is a state of near-sleep, a strong desire for sleep, or sleeping unusually long periods. It can refer both to a specific incidence preceding falling asleep, or a chronic condition referring to being in that state independent of a circadian rhythm. This disorder is most commonly associated with users of prescription hypnotics, such as Mirtazapine or Zolpidem.

It is considered a lesser impairment of consciousness than stupor or coma.

Associated conditions

Template:Incomplete-list

tranquilizers
hypnotics
some analgesics
some antiepileptics
generally many other agents with impact on central nervous system in sufficient doses
intracranial tumors
stroke
trauma to the brain
brain edema
any other intracranial bleeding such as due to ruptured aneurysm
hydrocephalus
encephalitis - (viral, bacterial or other agens)
and many others
Also caused by use of Antipsychotics

See also