RT Journal A1 Wilhelm S, Peterson AL, Piacentini J, et al T1 RAndomized trial of behavior therapy for adults with tourette syndrome JF Archives of General Psychiatry JO Archives of General Psychiatry YR 2012 FD August 1 VO 69 IS 8 SP 795 OP 803 DO 10.1001/archgenpsychiatry.2011.1528 UL http://dx.doi.org/10.1001/archgenpsychiatry.2011.1528 AB Context  Tics in Tourette syndrome begin in childhood, peak in early adolescence, and often decrease by early adulthood. However, some adult patients continue to have impairing tics. Medications for tics are often effective but can cause adverse effects. Behavior therapy may offer an alternative but has not been examined in a large-scale controlled trial in adults.Objective  To test the efficacy of a comprehensive behavioral intervention for tics in adults with Tourette syndrome of at least moderate severity.Design  A randomized controlled trial with posttreatment evaluations at 3 and 6 months for positive responders.Setting  Three outpatient research clinics.Patients  Patients (N = 122; 78 males; age range, 16-69 years) with Tourette syndrome or chronic tic disorder were recruited between December 27, 2005, and May 21, 2009.Interventions  Patients received 8 sessions of comprehensive behavioral intervention for tics or 8 sessions of supportive treatment for 10 weeks. Patients with a positive response were given 3 monthly booster sessions.Main Outcome Measures  Total tic score on the Yale Global Tic Severity Scale and the Clinical Global Impression–Improvement scale rated by a clinician masked to treatment assignment.Results  Behavior therapy was associated with a significantly greater mean (SD) decrease on the Yale Global Tic Severity Scale (24.0 [6.47] to 17.8 [7.32]) from baseline to end point compared with the control treatment (21.8 [6.59] to 19.3 [7.40]) (P < .001; effect size = 0.57). Twenty-four of 63 patients (38.1%) were rated as much improved or very much improved on the Clinical Global Impression–Improvement scale compared with 4 of 63 (6.4%) in the control group (P < .001). Attrition was 13.9%, with no difference across groups. Patients receiving behavior therapy who were available for assessment at 6 months after treatment showed continued benefit.Conclusion  Comprehensive behavior therapy is a safe and effective intervention for adults with Tourette syndrome.Trial Registration  clinicaltrials.gov Identifier: NCT00231985