Evaluation of Relationship Between Obsessive-Compulsive Disorder and Dissociative Experiences
1Psychiatry Clinic of Medikar Private Hospital, Karabuk, Turkey, 2Psychiatry Clinic of Bakırkoy Mazhar Osman Mental Health and Neurological Diseases Education and Research Hospital, İstanbul, Turkey, 3Child Development Department of Kırklareli University, Kırklareli, Turkey
Received: December 29, 2016; Revised: April 7, 2017; Accepted: April 18, 2017; Published online: April 18, 2017.
© The Korean College of Neuropsychopharmacology. All rights reserved.

Evaluation of Relationship Between Obsessive-Compulsive Disorder and Dissociative Experiences
Objective: The aim of the study is to evaluate the relationship between Obsessive-Compulsive Disorder (OCD) symptoms and dissociative experiences and the effect of childhood traumatic experiences on this relationship in OCD patients.
Methods: 50 consecutive OCD patients and 50 healthy controls who are sociodemographically matched with the patients are enrolled for this study. Sociodemographic and Clinical Data Form, Dissociative Experiences Scale (DES), Padua Inventory (PI) and Childhood Trauma Questionnaire (CTQ) are applied to participants.
Results: Average DES total score in the patient group is 20.58 and in the control group it is 4.87. In the patient group, rumination, impulses and precise subscale and total scores of PI is significantly related with all DES scores. In the patient group, when we evaluate the relation strengths of DES total and subscale scores with PI total score, we found out, that amnesia subscale has r=0.361 (p<0.01), absorbtion subscale has r=0.611 (p<0.01), depersonalization/derealization subscale has r=0.574 (p<0.01) and DES total score has r=0.55 (p<0.01) relation strengths with PI total score. In patient group both DES total score and CTQ total score have influence on PI total score independently from eachother. In addition to this, the level of the influnce of DES total scores on PI total scores is, R²= 0.399 (p<0.01) and the level of the influence of CTQ total scores on PI total scores is R²= 0.343 (p<0.01).
Conclusion: Dissociative experiences are seen more frequently in OCD patients than healthy controls. Among dissociative experiences, absorbtion has stronger relation with OCD symptoms. The relation between OCD and dissociation is independent from and stronger than the relation between childhood traumatic experiences and OCD.
Keywords: Obsessive-Compulsive Disorder, dissociation, trauma