Advanced sleep phase syndrome is included in which DSM-5 category?

Advanced sleep phase syndrome is included in which DSM-5 category?

• A. Circadian Rhythm Sleep Disorder
• B. Insomnia Disorder
• C. Narcolepsy
• D. Sleep-Related Movement Disorder

Answer: (A)

Advanced Sleep Phase Syndrome reflects a misalignment between the body's internal clock and the external world, causing sleep and wake times to occur much earlier than is typical. This timing issue is exactly what Circadian Rhythm Sleep-Wake Disorder captures in DSM-5, with the advanced type describing a phase-advanced schedule where people go to bed and wake up earlier, often with normal total sleep duration but social or environmental conflicts due to the early hours. This differs from insomnia, where the main problem is difficulty initiating or maintaining sleep despite opportunity; narcolepsy, which centers on excessive daytime sleepiness and sudden sleep attacks (often with cataplexy or sleep paralysis); and sleep-related movement disorders, which involve movements during sleep rather than a shifted sleep phase.

Advanced Sleep Phase Syndrome reflects a misalignment between the body's internal clock and the external world, causing sleep and wake times to occur much earlier than is typical. This timing issue is exactly what Circadian Rhythm Sleep-Wake Disorder captures in DSM-5, with the advanced type describing a phase-advanced schedule where people go to bed and wake up earlier, often with normal total sleep duration but social or environmental conflicts due to the early hours. This differs from insomnia, where the main problem is difficulty initiating or maintaining sleep despite opportunity; narcolepsy, which centers on excessive daytime sleepiness and sudden sleep attacks (often with cataplexy or sleep paralysis); and sleep-related movement disorders, which involve movements during sleep rather than a shifted sleep phase.