What is somnolence?


Somnolence (or "drowsiness") is a state of near-sleep, a strong desire for sleep, or sleeping for unusually long periods (cf. hypersomnia). It has two distinct meanings, referring both to the usual state preceding falling asleep, and the chronic condition referring to being in that state independent of a circadian rhythm. "Somnolence" is derived from the Latin "somnus" meaning "sleep."

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Some articles on somnolence:

Somnolence - Associated Conditions
... advanced sleep phase disorder Alice in Wonderland syndrome brain edema cerebral hypoxia chronic fatigue syndrome clinical depression, especially seasonal affective disorder (SAD) dehydration delayed sleep phase syndrome diabetes – ketoacidosis as example, but not balanced diabetes mellitus encephalitis – (viral, bacterial or other agents) epilepsy – after seizure hydrocephalus hyperparathyroidism hypothermia hypothyroidism infectious mononucleosis (glandular fever) intracranial hemorrhage such as due to ruptured aneurysm increased intracranial pressure for example, due to brain tumors lyme disease (borreliosis) medications analgesics – mostly prescribed or illicit opiates such as OxyContin or heroin anticonvulsants / antiepileptics – such as phenytoin (Dilantin), carbamazepine (Tegretol), Lyrica (pregbalin), Gabapentin antidepressants – for instance sedating tricyclic antidepressants, and mirtazapine ... Somnolence is less common with SSRIs and SNRIs as well as MAOIs ...
Postprandial Somnolence
... Post-prandial somnolence (colloquially known as The Itis or a food coma) is a normal state of drowsiness or lassitude following a meal ... Post-prandial somnolence has two components – a general state of low energy related to activation of the parasympathetic nervous system in response to mass in the gastrointestinal tract, and a specific state of ...

Famous quotes containing the word somnolence:

    The morning, which is the most memorable season of the day, is the awakening hour. Then there is least somnolence in us; and for an hour, at least, some part of us awakes which slumbers all the rest of the day and night.
    Henry David Thoreau (1817–1862)