Circadian Rhythm Sleep–Wake Disorders in Older Adults

Circadian rhythm sleep-wake disorders are characterized by a mismatch between desired sleep timing and actual sleep patterns.

• The interaction of the circadian timing system and sleep-wake homeostasis regulates sleep timing, duration, and consolidation.
• Optimal alignment of these systems supports wakefulness during the day and consolidated sleep at night.
• Disruptions in these processes can lead to difficulties in falling asleep, staying asleep, or remaining awake during the day.
• Aging may alter circadian regulation of sleep, affecting the prevalence and treatment of sleep disorders.
• Neurologic diseases in older adults can also impact circadian rhythms and overall sleep quality.

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