A case of subwakefulness syndrome.
We report a patient, a 30-year-old male Japanese-Brazilian migrant construction worker, suffering from excessive daytime sleepiness for at least 6 months. Electroencephalogram recordings during his waking states showed that 10-Hz and 60-microV alpha activity was present prominently in the occipital regions. From the multiple sleep latency test, it was found that stages 1-2 NREM sleep episodes appeared repetitively without any REM episodes, and that the mean sleep latency was 10.2 min. These findings support the diagnosis that this patient suffers from subwakefulness syndrome.
Hisanaga
A
A
Department of Neuropsychiatry, Toyama Medical and Pharmaceutical University, Japan.
Tsutsumi
M
M
Yasui
S
S
Fukuda
H
H
Tachibana
H
H
Hagino
H
H
Okabe
A
A
Mita
T
T
Saitoh
O
O
Kurachi
M
M
D000328:Adult; D000513:Alpha Rhythm; D001143:Arousal / Q000502:physiology; D002940:Circadian Rhythm / Q000502:physiology*; D004569:Electroencephalography; D006801:Humans; D008297:Male; D009778:Occipital Lobe / Q000503:physiopathology; D017286:Polysomnography; D012894:Sleep Stages / Q000502:physiology; D012893:Sleep Wake Disorders / Q000145:classification / Q000175:diagnosis* / Q000503:physiopathology; D013577:Syndrome; D014851:Wakefulness / Q000502:physiology*