Studies on the relationship between adverse childhood experiences and obsessive-compulsive disorder symptom severity are scarce. Available studies leave a considerable degree of uncertainty. The present study examines the relationship between adverse childhood experiences and symptom severity, chronicity, and comorbidity in a sample of patients with OCD.

Baseline data of the Netherlands Obsessive Compulsive Disorder Association (NOCDA) study, in which 382 referred patients with DSM-IV–diagnosed OCD participated, were analyzed. Adverse childhood experiences (physical abuse, sexual abuse, witnessing interparental violence, maternal dysfunction, paternal dysfunction, and early separation from a parent) were measured using a structured interview.
 

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