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Evidence-based treatments for post-traumatic stress disorder (PTSD), typically tested in narrowly defined groups without other comorbidities, have shown beneficial but limited effects. Treatment effects on nonsymptomatic domains of function (e.g., relationships) have been infrequently examined. In two randomized, controlled trials, researchers have now examined the effectiveness of tailored cognitive-behavioral therapy (CBT) in two population groups — individuals with PTSD and comorbid substance dependence, and individuals whose PTSD had presumably worsened their intimate relationships.
Mills and colleagues compared standard substance-dependence treatment alone or added to prolonged exposure in 103 patients with severe substance dependence (early onset; 80% with drug injection use histories) and severe PTSD (Clinician-Administered PTSD Scale [CAPS] score, 90). Intervention recipients had greater CAPS reductions than controls at 9 months (but not earlier); PTSD rates were statistically similar (56% and 79%). The groups showed similarly decreased substance dependence rates (9-month rates, 45% and 56%), similarly limited rates of abstinence (18% and 27%), and similar levels of anxiety and depression symptoms.
Monson and colleagues randomized 40 couples with one partner who had modestly severe PTSD (CAPS score, 71) to couples-oriented CBT treatment for PTSD or to a waiting list. Treatment was associated with greater reductions in CAPS scores at posttreatment (median, 16 weeks) than the waiting list (–35.4 vs. –12.2 points) and four times greater improvement in patient-reported relationship satisfaction.
Mills KL et al. Integrated exposure-based therapy for co-occurring posttraumatic stress disorder and substance dependence: A randomized controlled trial. JAMA 2012 Aug 15; 308:690.
Monson CM et al. Effect of cognitive-behavioral couple therapy for PTSD: A randomized controlled trial. JAMA 2012 Aug 15; 308:700.
Najavits LM. Expanding the boundaries of PTSD Treatment. JAMA 2012 Aug 15; 308:714.
Comment
These results are not overly encouraging. Treating PTSD in very ill substance-abusing patients shows no more effect on substance abuse than standard treatment and shows limited effects on PTSD compared with no PTSD treatment. Couples-oriented CBT improves PTSD and relationship functioning, but we cannot know if this therapy is equivalent to individual PTSD treatment or if its beneficial relationship effects would be greater than those observed in individual treatment, whether targeting PTSD or relationships. An editorialist takes a similar view, suggesting that treatment of PTSD has a long way to go, especially for patients who are more severely ill and thus more difficult to treat.