1. Trichotillomania comorbidity in a sample enriched for familial obsessive-compulsive disorder
- Author
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Gerstenblith, Ted Avi, Jaramillo-Huff, Ashley, Ruutiainen, Tuua, Nestadt, Paul S, Samuels, Jack F, Grados, Marco A, Cullen, Bernadette A, Riddle, Mark A, Liang, Kung-Yee, Greenberg, Benjamin D, Rasmussen, Steven A, Rauch, Scott L, McCracken, James T, Piacentini, John, Knowles, James A, Nestadt, Gerald, and Bienvenu, O Joseph
- Subjects
Clinical and Health Psychology ,Psychology ,Brain Disorders ,Mental Health ,Clinical Research ,Pediatric ,Anxiety Disorders ,Serious Mental Illness ,Mental health ,Good Health and Well Being ,Adult ,Comorbidity ,Diagnostic and Statistical Manual of Mental Disorders ,Disruptive ,Impulse Control ,and Conduct Disorders ,Female ,Genetic Linkage ,Humans ,Male ,Middle Aged ,Obsessive-Compulsive Disorder ,Trichotillomania ,Young Adult ,classification ,Impulse-control disorder ,Obsessive-compulsive disorder ,Clinical Sciences ,Psychiatry ,Clinical sciences ,Clinical and health psychology - Abstract
BackgroundThis study addresses the strength of associations between trichotillomania (TTM) and other DSM-IV Axis I conditions in a large sample (n = 2606) enriched for familial obsessive-compulsive disorder (OCD), to inform TTM classification.MethodsWe identified participants with TTM in the Johns Hopkins OCD Family Study (153 families) and the OCD Collaborative Genetics Study, a six-site genetic linkage study of OCD (487 families). We used logistic regression (with generalized estimating equations) to assess the strength of associations between TTM and other DSM-IV disorders.ResultsTTM had excess comorbidity with a number of conditions from different DSM-IV chapters, including tic disorders, alcohol dependence, mood disorders, anxiety disorders, impulse-control disorders, and bulimia nervosa. However, association strengths (odds ratios) were highest for kleptomania (6.6), pyromania (5.8), OCD (5.6), skin picking disorder (4.4), bulimia nervosa (3.5), and pathological nail biting (3.4).ConclusionsTTM is comorbid with a number of psychiatric conditions besides OCD, and it is strongly associated with other conditions involving impaired impulse control. Though DSM-5 includes TTM as an OCD-related disorder, its comorbidity pattern also emphasizes the impulsive, appetitive aspects of this condition that may be relevant to classification.
- Published
- 2019