EEG complexity as an indication for sleep-wake patterns in patients with disorders of consciousness

were used to compare differences between and within groups. Results: In our study, adolescents with CFS stayed in bed longer and had a significantly delayed mid sleep time during work days compared to the healthy controls. Further, adolescents with CFS also scored significantly worse on insomnia (mean 3.4 vs 4.9), sleepiness (mean 3.7 vs 5.0) and awakening problems (mean 2.5 vs 4.9) on KSQ. Moreover, they report longer sleep onset latency than healthy controls (mean 75 min vs 31 min). Conclusions: Our findings suggest that adolescents with CFS subjectively have more insomnia-, sleepinessand awakening symptoms than their healthy peers. Objectively we found a sleeping pattern that indicates delayed sleep rhythm. Disclosure: Nothing to disclose.