Reference Terms
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Night terror

A night terror, also known as sleep terror or pavor nocturnus, is a parasomnia sleep disorder characterized by extreme terror and a temporary inability to regain full consciousness.

The subject wakes abruptly from the fourth stage of sleep, with waking usually accompanied by gasping, moaning, or screaming.

It is often impossible to fully awaken the person, and after the episode the subject normally settles back to sleep without waking.

Note:   The above text is excerpted from the Wikipedia article "Night terror", which has been released under the GNU Free Documentation License.
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May 30, 2015

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