title: Skin picking disorder with co-occurring body dysmorphic disorder.
abstract: There is clinical overlap between skin picking disorder (SPD) and body dysmorphic disorder (BDD), but little research has examined clinical and cognitive correlates of the two disorders when they co-occur. Of 55 participants with SPD recruited for a neurocognitive study and two pharmacological studies, 16 (29.1%) had co-occurring BDD. SPD participants with and without BDD were compared to each other and to 40 healthy volunteers on measures of symptom severity, social functioning, and cognitive assessments using the Stop-signal task (assessing response impulsivity) and the Intra-dimensional/Extra-dimensional Set Shift task (assessing cognitive flexibility). Individuals with SPD and BDD exhibited significantly worse picking, significantly worse overall psychosocial functioning, and significantly greater dysfunction on aspects of cognitive flexibility. These results indicate that when SPD co-occurs with BDD unique clinical and cognitive aspects of SPD may be more pronounced. Future work should explore possible subgroups in SPD and whether these predict different treatment outcomes.
authors.affiliation: Department of Psychiatry & Behavioral Neuroscience, University of Chicago, Chicago, IL, USA. Electronic address: jongrant@uchicago.edu.
authors.forename: Jon E
authors.initials: JE
authors.lastname: Grant
authors.affiliation: Department of Psychiatry & Behavioral Neuroscience, University of Chicago, Chicago, IL, USA.
authors.forename: Sarah A
authors.initials: SA
authors.lastname: Redden
authors.affiliation: Department of Psychiatry & Behavioral Neuroscience, University of Chicago, Chicago, IL, USA.
authors.forename: Eric W
authors.initials: EW
authors.lastname: Leppink
authors.affiliation: Department of Public Health, Faculty of Health and Medical Sciences, University of Copenhagen, Copenhagen, Denmark.
authors.forename: Brian L
authors.initials: BL
authors.lastname: Odlaug
mesh_terms: D000328:Adult; D057215:Body Dysmorphic Disorders / Q000150:complications* / Q000523:psychology*; D001828:Body Image / Q000523:psychology; D007174:Disruptive, Impulse Control, and Conduct Disorders / Q000150:complications* / Q000523:psychology*; D005260:Female; D006801:Humans; D008297:Male; D016728:Self-Injurious Behavior / Q000150:complications* / Q000523:psychology*; D012917:Social Adjustment
keywords: Cognition; Dysmorphia; Impulse; Inhibition; Skin picking