What Can Cause Excessive Daytime Sleepiness?
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Insufficient sleep, irregular schedules, poor sleep quality, certain medicines, and sleep-related conditions can all contribute to daytime sleepiness. Conditions such as narcolepsy, obstructive sleep apnea, and shift work sleep disorder may also involve excessive daytime sleepiness. For general reading, MindFuelsGermany discusses daytime wakefulness and sleep health along with other sleep-related subjects.