Objective-Although serotonin reuptake inhibitors (SRIs) are approved for the treatment of obsessive-compulsive disorder (OCD), most OCD patients who have received an adequate SRI trial continue to have clinically significant OCD symptoms. The purpose of this study was to examine the effects of augmenting SRIs with exposure and ritual prevention, an established cognitive-behavioral therapy (CBT) for OCD.Method-A randomized, controlled trial was conducted at two academic outpatient clinics to compare the effects of augmenting SRIs with exposure and ritual prevention versus stress management training, another form of CBT. Participants were adult outpatients (N=108) with primary OCD and a Yale-Brown Obsessive Compulsive Scale total score ≥16 despite a therapeutic SRI dose for at least 12 weeks prior to entry. Participants received 17 sessions of CBT (either exposure and ritual prevention or stress management training) twice a week while continuing SRI pharmacotherapy.Results-Exposure and ritual prevention was superior to stress management training in reducing OCD symptoms. At week 8, significantly more patients receiving exposure and ritual prevention than patients receiving stress management training had a decrease in symptom severity of at least 25% (based on Yale-Brown Obsessive Compulsive Scale scores) and achieved minimal symptoms (defined as a Yale-Brown Obsessive Compulsive Scale score ≤12).Conclusions-Augmentation of SRI pharmacotherapy with exposure and ritual prevention is an effective strategy for reducing OCD symptoms. However, 17 sessions were not sufficient to help most of these patients achieve minimal symptoms.Obsessive-compulsive disorder (OCD) is a severe and disabling illness (1). Serotonin reuptake inhibitors (SRIs) (e.g., clomipramine and various selective serotonin re-uptake inhibitors [SSRIs]) and cognitive-behavioral therapy (CBT) involving exposure and ritual
NIH-PA Author ManuscriptNIH-PA Author Manuscript NIH-PA Author Manuscript prevention have both been found to be efficacious in randomized, controlled trials (2). In clinical practice, SRIs are used most frequently (3), but because they typically yield only a 20%-40% reduction in OCD symptoms (4), many SRI responders continue to have clinically significant symptoms.The only SRI augmentation strategy with proven efficacy in multiple randomized, placebocontrolled trials involves the addition of antipsychotics (e.g., haloperidol, risperidone, olanzapine, or quetiapine) (5). However, at most only half of the patients respond (i.e., experience ≥25% reduction in OCD severity) (6, 7) and antipsychotics can cause significant adverse effects (8).Because of the efficacy of exposure and ritual prevention as monotherapy for OCD (9) and promising findings from our open SRI augmentation trial using exposure and ritual prevention (10), we conducted a randomized, controlled trial to compare the effects of augmenting SRIs with exposure and ritual prevention versus stress management training, another form of CBT. Stress management training teache...