A Systematic Review on the Prevalence of Comorbid Substance Use Disorder in Obsessive–Compulsive Disorder Among the General Population

Abstract

Background: To estimate the prevalence of co-occurring obsessive–compulsive disorder (OCD) with substance use disorder (SUD) in the general population. Methods: A comprehensive literature search was conducted on the prevalence of comorbid OCD and SUD in the general population using MEDLINE, PsycINFO, EMBASE and CINAHL. Using the keywords, relevant studies published between 1993 and 2021 were identified. These studies were analysed using the Preferred Reporting Items for Systematic Reviews and Meta-Analysis (PRISMA) guidelines and the guidelines for Meta-analysis for Observational Studies in Epidemiology. Results: Fourteen studies met the inclusion criteria and had a total combined sample size of 47,850 participants. The lifetime prevalence of any identified SUD in patients with OCD ranged between 4.3% and 62.4%. Among co-occurring OCD with AUD, prevalence ranged between 14.1% and 35.9%; cannabis use disorder and OCD, between 11.5% and 24.4%; and tobacco use disorder and OCD, between 15% and 23.1%. Alcohol was the commonest psychoactive substance used in most of the studies reviewed and the prevalence of co-occurring substance use was highest in males. Conclusions: In conclusion, this review highlights the variable prevalence of co-occurring SUDs in individuals with OCD, emphasizing that the association differs based on the type of substance. Overall, the prevalence rate of co-occurring OCD and SUDs underscores the need for further research on the relationship between these conditions and the development of effective treatment strategies that address both disorders concurrently.