Body focused repetitive behaviour disorders in children and adolescents: Clinical characteristics and treatment outcomes in a naturalistic setting

Body-focused repetitive behaviour disorders, including trichotillomania (hair-pulling disorder) and excoriation (skin-picking) disorder, typically emerge in early adolescence, but little is known about the clinical characteristics and treatment outcomes of these disorders in young people, particularly in real world clinical settings. Participants were 63 children and adolescents (51 girls; age range 9-17) with a diagnosis of trichotillomania (n=33) and/or skin-picking disorder (n=33) attending a specialist outpatient clinic in Stockholm, Sweden. Demographic and clinical characteristics were gathered at the initial assessment. Of the 63 assessed youths, 56 received manual-based behaviour therapy mainly focusing on habit reversal training, which was combined with medication when deemed appropriate. The mean clinician-reported trichotillomania and skin-picking disorder symptom severity at baseline (n=63) was in the moderate range. We observed high rates of psychiatric comorbidity (63.5%) and use of psychiatric medication (54.8%). For the 56 individuals undertaking treatment at the clinic, mixed-effects regression models showed a significant decrease in symptom severity from baseline to post-treatment, with gains maintained up to the 12-month follow-up. Substantial and durable improvements were also seen on self-reported symptoms, self-reported depression, and global functioning. Specialist care should be made more widely available to improve the prognosis and quality of life of young people with trichotillomania and skin-picking disorder.