daytime sleepiness
Midday eyelid heaviness
Daytime sleepiness is the feeling of drowsiness or difficulty staying alert during waking hours.
It ranges from mild tiredness to an overwhelming urge to sleep.
The term appears frequently in medical contexts discussing sleep disorders, medication side effects, or insufficient rest: The medication lists daytime sleepiness as a common side effect.
Also called daytime somnolence.
- drowsyNearly falling asleep
- fatigueWeariness from prolonged exertion
- tiredLacking energy, needing rest
- heavy eyelidsTired, half-closed eyes
- nappingSleeping briefly, often midday
power nap · yawning · sluggish · groggy · heavy-eyed · nodding · nodding off · lethargic · exhaustion · burning eyes · caffeine · coffee break · afternoon · siesta · couch · eyelids · pillow · fog
- Fatigue Conditionschronic fatigue syndrome, ME, post-viral fatigue, burnout syndrome
- sleep disruptionsinsomnia, jet lag, narcolepsy, hypersomnia, night shifts
- sleep apneaCPAP machines, apnea, CPAP, full face masks, BiPAP
daytime sleepinessalertness
Active mental awareness
wakefulness · vigilance · mental sharpness · attentiveness · hypervigilance
daytime, times, timing, timely, sleepy, sleepiness, sleep, sleeps, sleeping