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Causes of Excessive Daytime Sleepiness (Circadian rhythm disturbance…
Causes of Excessive Daytime Sleepiness
Circadian rhythm disturbance
Shift work sleep disorder
Jet lag
Environmental
Ambient noise
Secondary
Drugs
Medical condition-related hypersomnia
Insufficient sleep duration (or inadequate opportunity for sleep)
Target 7-8hrs per night
Sleep hygiene
Narcolepsy
Circadian rhythm sleep disorders
Abnormalities in length, timing, and/or rigidity of the sleep-wake cycle relative to the day-night cycle
Example:Non-24-hour Sleep-Wake Disorder (Non-24) a circadian sleep disorder in which an individual falls asleep later each day. Generally the delay is about an hour or two, corresponding to a circadian cycle of 25 - 26 hours; but some individuals with Non-24 exhibit a much longer delay. Non-24 is most commonly seen in people who are totally blind
Idiopathic hypersomnia
Sleep-disordered Breathing Syndromes
Obstructive Sleep Apnoea
Central Sleep Apnoea
Restless legs syndrome and periodic limb movement disorder
EXTRINSIC CAUSES
INTRINSIC CAUSES