Original ArticlesThe Comorbidity of Daydreaming Disorder (Maladaptive Daydreaming)Somer, Eli PhD*; Soffer-Dudek, Nirit PhD†; Ross, Colin A. MD‡Author Information *School of Social Work, University of Haifa, Haifa; †Department of Psychology, Ben-Gurion University of the Negev, Beer-Sheva, Israel; and ‡The Colin A. Ross Institute, Richardson, Texas. Send reprint requests to Eli Somer, PhD, Faculty of Social Welfare and Health Sciences, School of Social Work, University of Haifa, 199 Abba Khoushy Ave., Haifa 3498828, Israel. E-mail: email@example.com. The Journal of Nervous and Mental Disease: July 2017 - Volume 205 - Issue 7 - p 525-530 doi: 10.1097/NMD.0000000000000685 Buy Metrics Abstract To determine the comorbidity profile of individuals meeting criteria for a proposed new disorder, daydreaming disorder (more commonly known as maladaptive daydreaming [MD]), the Structured Clinical Interview for Diagnostic and Statistical Manual of Mental Disorders, Fifth Edition (DSM-5) and the Structured Clinical Interview for DSM-IV Dissociative Disorders were administered to 39 participants who met criteria for MD on a structured interview. We determined high rates of comorbidity: 74.4% met criteria for more than three additional disorders, and 41.1% met criteria for more than four. The most frequent comorbid disorder was attention deficit hyperactivity disorder (76.9%); 71.8% met criteria for an anxiety disorder, 66.7% for a depressive disorder, and 53.9% for an obsessive-compulsive or related disorder. Notably, 28.2% have attempted suicide. Individuals meeting criteria for MD have complex psychiatric problems spanning a range of DSM-5 disorders. This finding provides evidence that MD is different than normal daydreaming and that these individuals experience considerable distress and impairment. Copyright © 2017 Wolters Kluwer Health, Inc. All rights reserved.