+A **sleep disorder** is a medical condition that disrupts the natural [sleep cycle](/wiki/sleep_cycle), preventing restorative rest. These disturbances, from [insomnia](/wiki/insomnia) to excessive daytime sleepiness, can significantly impair daily functioning and overall health. Understanding and managing these conditions is key to well-being.
+## See also
+- [Sleep](/wiki/sleep)
+- [Narcolepsy](/wiki/narcolepsy)
+- [Sleep Apnea](/wiki/sleep_apnea)
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