a very sleepy state; "sleepiness causes many driving accidents"
also called excessive sleepiness or excessive daytime sleepiness; the inability to stay awake during the normal wake period of a sleep-wake cycle. It can be measured by a multiple sleep latency test (MSLT)
Prolonged drowsiness or sleepiness. Close Window
Excessive sleepiness or unnatural drowsiness. For people with COPD, it is a sign of dangerously high levels of carbon dioxide in the blood. If you experience this you should seek emergency care immediately.
Excessive drowsiness or sleepiness.
Sleepiness, abnormal drowsiness
A feeling of sleepiness or tiredness.
somnolency sawm'nolence, sawm'nolency; 1. Drowsiness; sleepiness 2. A condition of semiconsciousness approaching coma. Term: Definition
Oppressive drowsiness or inclination to sleep.
Somnolence (or "drowsiness") is a state of near-sleep, a strong desire for sleep, or sleeping unusually long periods. 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. The disorder characterized by the latter condition is most commonly associated with users of prescription hypnotics, such as Mirtazapine or Zolpidem.