What is the role of polysomnography in the workup of nightmare disorder?

Updated: Aug 08, 2018
  • Author: Daniel R Neuspiel, MD, MPH, FAAP; Chief Editor: Caroly Pataki, MD  more...
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Answer

Polysomnography may be indicated. The hallmark of the various parasomnias is whether they occur during REM sleep, at the sleep-wake transition, or during slow-wave sleep. Polysomnographic studies demonstrate abrupt awakenings from REM sleep, usually during the second half of the night, prior to report of a nightmare. [3]


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