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.

For more information about the topic Night terror, read the full article at Wikipedia.org, or see the following related articles:

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Editor's Note: This article is not intended to provide medical advice, diagnosis or treatment.

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