Patient 1 Patient 2 Patient 3 Patient 4 Patient 5
Age 22 36 44 25 46
Gender Female Male Female Male Female
Approximate age of onset Adult Adult Adult Late teens Childhood, persisted in adulthood
Childhood history of sleep walking No No Yes None prior Yes
Comorbid sleep disorder Insomnia Mild OSA (RDI=10/hr) Insomnia OSA OSA
Other comorbidities Bipolar disorder None Dystonia None None
Medications Zolpidem, quietapine None Zolpidem None None
Epilepsy risk factors N/a None None None None
Known history of seizures No No No No No
Sleep fragmentation Frequent awakenings Awakenings, due to noise Yes Yes Yes
Time of night    First half Middle Unknown Variable First half
Frequency of events Variable Variable – more frequent when sleep fragmented N/a Almost every night Three per week in childhood, two per month in adulthood
Main event type Sleep eating, occasional sleepwalking Sleepwalking, arm/leg movements, talking Sleepwalking, re-arranging objects, complex behaviors Sleepwalking, talking, laughter, gesturing, complex behaviors Sleepwalking, talking, screaming, agitation, complex behaviors
Stereotypical events No No No No No
Oriented after event Not witnessed Yes Not witnessed Yes Not witnessed
Amnesia Yes Yes Yes Yes Yes
Probable provoking factors Zolpidem, fragmented sleep Noise, sleep fragmentation Zolpidem None known OSA
Use of Zolpidem Yes No Yes No No
MRI/other evaluations N/a Normal MRI N/a N/a Normal MRI, CT
Improvement with Corrected sleep hygiene, stop Zolpidem Lorazepam, OSA treatment Stop Zolpidem Surgical treatment of OSA; events mostly persisted Events resolved with optimal CPAP use
Table 1: Clinical characteristics of the five adults.