Sleep Disorders > Parasomnias

These disorders are much more rare than the dyssomnias. Some of the most frequently-seen parasomnias are:

Sleepwalking & sleeptalking (sometimes occur as part of:)
REM Behavior Disorder (RBD)
- Motor activity and/or talking during REM sleep
- Usually involves acting out of dreams
Nightmare Disorder
- Usually occurs during latter half of night, during REM sleep
- Easily aroused from episode, readily recalls event
Sleep Terror Disorder
- Occurs during first third of night, during deep sleep
- Usually confused, difficult to console, unable to recall part of all of event
All of the above are diagnosed with a PSG, and are usually treated with medication
Others (bruxism – grinding of teeth during sleep, sleep eating disorder, confusional arousals); please see references listed below for more on these or other sleep-related topics.

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