A person who has difficulty falling asleep and wakes up frequently is suffering from

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Insomnia is a sleep disorder characterized by difficulty falling asleep and/or staying asleep. Non-REM sleep refers to the stages of sleep that are not Rapid Eye Movement sleep, and is not related to insomnia. Sleep debt refers to the cumulative effect of not getting enough sleep over multiple nights. Narcolepsy is a sleep disorder characterized by excessive daytime sleepiness and sudden sleep attacks.

A Person Who Has Difficulty Falling Asleep and Wakes Up