Sleep disorders - insomnia
Description
- Persistent difficulty initiating, maintaining sleep, or early waking, with daytime impairment, despite adequate opportunity for sleep
- Chronic insomnia disorder - symptoms >=3 nights/week for >=3 months; short-term/acute insomnia - less than 3 months, usually a clear precipitant (stress, illness, jet lag)
- Primary vs secondary/comorbid - insomnia is now framed as comorbid with, rather than simply secondary to, conditions like depression/anxiety/pain, given it often persists independently and needs its own treatment
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