Definitions for "Excessive Daytime Sleepiness"
the symptom of being overly sleepy
sometimes called excessive sleepiness, the inability to stay awake during the normal wake period of a sleep-wake cycle or may involve involuntary sleep. Common causes include: insufficient sleep, sleep apnea, narcolepsy, and insomnia.
(also "excessive daytime somnolence") - subjective report of difficulty in staying awake, accompanied by a ready entrance into sleep when the individual is sedentary EDS suggests the presence of a significant sleep disorder and is different from fatigue. Depression, anxiety, stress, and boredom are commonly thought to cause excessive sleepiness, but in fact these conditions cause fatigue and apathy.