Comorbidity between Schizophrenia and Obsessive-Compulsive Disorder: A Literature Review
DOI:
https://doi.org/10.25752/psi.6121Keywords:
Obsessions, Delusions, Schizophrenia, Obsessive Compulsive Disorder, Schizo-Obsessive Disorder.Abstract
Background: The prevalence of obsessive-compulsive symptoms and obses-sive-compulsive disorder in patients primarily diagnosed with schizophrenia has increased significantly in the last years with increasing the number of publications focused on this theme.
Aims: The present review aims to analyze the concepts of schizophrenia, obsessive-compulsive disorder and the comorbility between both disorders as well as some of the clinical features which distinguishes them.
Methods: A literature review was carried out using the Pubmed between 2009 and 2014 with the keywords: “Comorbidity between Obsessive-Compulsive Disorder and Schizophrenia” and “Schizo-Obsessive Disorder”.
Results and Conclusions: The available literature focuses mainly on the proposal of explanatory theories for the high comorbidity between obsessive-compulsive disorder and schizophrenia – one disorder as a risk factor of the other one; common risk factors of the two disorders; pharmacologically induced obsessive-compulsive disorder – and on the distinction between obsessions and delusions and between compulsions and repetitive delusional behaviour, essential for the differential diagnosis of the two disorders. The controversy associated with the recently proposed new sub-group of schizophrenia – Schizo-obsessive disorder – and with the causal relation between the two pathologies allows the conclusion that future studies should focus on the temporal relation between the emergence of the two disorders and also the appearance of symptoms of one disorder in the course of the other.
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