A person who exhibits sudden paralysis but remains conscious may be suffering from

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The sudden paralysis accompanied by consciousness is indicative of cataplexy, which is a symptom of narcolepsy. Cataplexy is a sudden loss of muscle tone that is typically triggered by strong emotions such as laughter or excitement. During an episode of cataplexy, the individual is typically fully conscious and aware of their surroundings but unable to move. This distinguishes cataplexy from other sleep disorders such as REM without atonia, somnambulism, sleep attack, or situational insomnia.

A Person Who Exhibits Sudden Paralysis but Remains Conscious May