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ACT-enhanced behavior therapy in group format for Trichotillomania: An effectiveness study

2017; Elsevier BV; Volume: 12; Linguagem: Inglês

10.1016/j.jocrd.2017.01.005

2211-3657

Vegard Øksendal Haaland, Shirin O. Eskeland, Erna M. Moen, Patrick A. Vogel, Svein Haseth, Kjetil Mellingen, Joseph A. Himle, Douglas W. Woods, Benjamin Hummelen,

Body Image and Dysmorphia Studies

This study sought to investigate the effectiveness of group treatment for trichotillomania (TTM) in ordinary clinical settings. Treatment consisted of a combination of habit reversal training (HRT) and acceptance and commitment treatment (ACT). Both short- and long-term effects were explored, as well as individual change trajectories. The sample consist of fifty-three patients with TTM. Treatment outcomes were evaluated at post-treatment and at one-year follow-up using self-report questionnaires (Massachusetts General Hospital Hair Pulling Scale, MGH-HS), structured clinical interviews (National Institute of Mental Health Trichotillomania Severity Scale, NIMH-TSS), and the Clinical Global Impression scale for TTM (CGI-TTM). Analyses by mixed models for repeated measurements yielded a statistically significant effect of time (p<.001) for all outcome measures. There were large effect sizes, ranging from 1.76 to 2.33 at post-treatment and from 1.03 to 1.43 at one-year follow-up. Nearly 90% of patients scored below the diagnostic threshold at post-treatment on the CGI-TTM, and slightly more than 60% remained so at one-year follow-up. There were large and statistically significant differences in the change profiles across the patients from post-treatment to one year follow-up. ACT-enhanced behavior therapy in a group format seems efficient for reducing symptoms of trichotillomania.