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van den Noort et al. Neuroimmunol Neuroinflammation 2016;3:225-7 Neuroimmunology and
DOI: 10.20517/2347-8659.2016.42
Neuroinflammation

www.nnjournal.net
Editorial Open Access

Schizophrenia and comorbid sleep

disorders

Maurits van den Noort , Heike Staudte , Benoît Perriard , Sujung Yeo , Sabina Lim , Peggy Bosch 3,6
3
4
1
5
1,2
1 Research Group of Pain and Neuroscience, Kyung Hee University, Seoul 130-701, South Korea.
2 Brussels Institute for Applied Linguistics, Vrije Universiteit Brussel, 1050 Brussels, Belgium.
3 Psychiatric Research Institute, LVR-Klinik Bedburg-Hau, 47511 Bedburg-Hau, Germany.
4 Neurology Unit, Laboratory for Cognitive and Neurological Sciences, Department of Medicine, Faculty of Science, University of Fribourg, 1700 Fribourg, Switzerland.
5 Department of Acupuncture and Meridian of Oriental Medicine, Sang Ji University, Wonju 26339, South Korea.
6 Centre for Cognition, Donders Institute for Brain, Cognition and Behaviour, Radboud University Nijmegen, 6500 GL Nijmegen, Gelderland, the Netherlands.
Correspondence to: Prof. Maurits van den Noort, Research Group of Pain and Neuroscience, Kyung Hee University, #47 Gyeonghuidae-Gil,
Dongdaemun-Gu, Seoul 130-701, South Korea. E-mail: info@mauritsvandennoort.com
How to cite this article: van den Noort M, Staudte H, Perriard B, Yeo S, Lim S, Bosch P. Schizophrenia and comorbid sleep disorders.
Neuroimmunol Neuroinflammation 2016;3:225-7.
Article history: Received: 18-09-2016 Accepted: 20-09-2016 Published: 28-10-2016

Prof. Maurits van den Noort is a regular professor (Research Group of Pain and Neuroscience) at Kyung Hee
University in Seoul, South Korea. Moreover, he is a visiting professor at the Free University of Brussels in Belgium.
He is especially interested in schizophrenia, depression, sleep disorders, fMRI, and TMS.

Schizophrenia is a severe psychiatric disorder that sleep problems in patients with schizophrenia are also
has a worldwide prevalence of 0.5% and poses a often under-estimated in daily clinical practice. [7]
[1]
high cost to society. The disorder is characterized
[2]
by positive symptoms, such as hallucinations and In the Diagnostic and Statistical Manual of Mental
delusions, negative symptoms, such as impaired Disorders 5th Edition (DSM-V), sleep-wake disorders
[8]
[3]
emotional functioning and behavioral disruptions (e.g. are classified into 10 disorders or disorder groups (e.g.
flat affect, difficulty in starting activities and completing insomnia disorder, restless legs syndrome, circadian
them, etc.), and cognitive symptoms, such as deficits rhythm sleep-wake disorders, etc.). Patients suffering
[4]
in executive functioning, impaired working memory, from sleep-wake disorders have problems with respect
and attention problems. Less known to the general to the quality, the timing, and the total amount of sleep,
[5]
[8]
public is the fact that a large number of the patients leading to distress and impairment in their social and
with schizophrenia suffer from sleep disturbances, cognitive functioning. [9]
such as reduced sleep efficiency, reduced total sleep
time, and increased sleep latency. Surprisingly, those Several treatments have been used in patients with
[6]
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