Sleep disorders in patients with obsessive-compulsive disorder: A systematic review of the literature.

Patients with obsessive-compulsive disorder are presumed to be at higher risk of sleep disorders due to the potential interference that persistent thoughts and compulsions may exert on sleep. Although there are studies on sleep findings in patients with obsessive-compulsive disorder, there are few systematic reviews on the presence of sleep disorders in patients with obsessive-compulsive disorder for adults and children. Preferred reporting items for systematic reviews and meta-analyses (PRISMA) guidelines were followed to perform a comprehensive search of PubMed and Web of Science using the MeSH terms "obsessive-compulsive disorder" and "sleep wake disorders".