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Night terrors are sudden, intense episodes of fear and agitation that occur during deep sleep, often involving screaming, rapid breathing, and physical thrashing without the person fully waking up. Unlike nightmares, they happen in non-REM sleep and are usually not remembered the next day, making them particularly puzzling and distressing for parents or partners. In modern contexts, they're commonly linked to stress, fever, or sleep deprivation, though they typically resolve on their own by adolescence.
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